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Summary of Contents for Vaisala HMP110REF
- Page 1 USER'S GUIDE Vaisala Humidity and Temperature Probes HMP60 and HMP110 Series M211060EN-H...
- Page 2 This manual does not create any legally binding obligations for Vaisala towards customers or end users. All legally binding obligations and agreements are included exclusively in the applicable supply contract or the General Conditions of Sale and General Conditions of Service of Vaisala.
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Page 3: Table Of Contents
Mounting the HMP63 and HMP113 Probes ......25 Wiring ..................26 Wiring Multiple Digital Devices ..........27 Wiring with the Loop Power Converter ....... 29 Power Supply Requirements ..........30 Recommendations ............30 CHAPTER 4 OPERATION ....................31 Getting Started ............... 31 VAISALA _________________________________________________________________________ 1... - Page 4 User's Guide _______________________________________________________________________ Serial Line Communication ........... 31 Connecting to the Serial Interface ........31 Installing the Driver for the USB Cable ........ 33 Terminal Application Settings for Digital Probes ....34 Accessing Serial Line Command Interface (RS-485 Mode) from Analog or Modbus Mode ....36 Modbus Communication ............
- Page 5 Mechanics (HMP63 and HMP113) ........73 Options and Accessories ............74 APPENDIX A MODBUS REFERENCE ................75 Supported Modbus Functions ..........75 Modbus Register Map ............76 Device Identification Objects ..........78 Communication Test Registers ..........78 VAISALA _________________________________________________________________________ 3...
- Page 6 User's Guide _______________________________________________________________________ List of Figures Figure 1 HMP60 and HMP110 Series Probes ........11 Figure 2 Filters for HMP60, HMP110, and HMP110T ......14 Figure 3 Filters for HMP63 and HMP113 ..........14 Figure 4 Probe Mounting Clamp in Use ..........15 Figure 5 Aligning Mounting Clamp Slots ..........
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Page 7: Chapter 1 General Information
HMP60 and HMP110 series probes. - Chapter 6, Troubleshooting, describes common problems, their probable causes and remedies, and contact information for technical support. - Chapter 7, Technical Data, provides the technical data of the HMP60 and HMP110 series probes. VAISALA _________________________________________________________________________ 5... -
Page 8: Version Information
User's Guide _______________________________________________________________________ Version Information Table 1 Manual Revisions Manual Code Description M211060EN-H August 2017. This manual. • Removed the separate HMP110D digital output model: digital output is now a selectable option when ordering the HMP110 model (either analog or digital- only HMP110 selected when ordering). -
Page 9: Documentation Conventions
ESD Protection Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against ESD for their intended use. It is possible to damage the product, however, by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing. -
Page 10: Recycling
ROHS Directive EMC Directive The electromagnetic compatibility of HMP60, HMP110, HMP110T, and HMP110REF has been tested according to the following product family standards: - EN 61326-1: Electrical equipment for measurement, control and laboratory use - EMC requirements – for use in industrial locations. -
Page 11: Trademarks
United States and/or other countries. License Agreement All rights to any software are held by Vaisala or third parties. The customer is allowed to use the software only to the extent that is provided by the applicable supply contract or Software License Agreement. -
Page 12: Chapter 2 Product Overview
- Hand-held meters. HMP60 series probes use the interchangeable Vaisala INTERCAP® sensor. No recalibration is required after sensor replacement. HMP110 series probes use the Vaisala HUMICAP® 180R sensor for increased accuracy. For applications where H (for example, vaporized hydrogen peroxide (VHP)) is present, HMP110 series probes can also be ordered with the HUMICAP®... -
Page 13: Figure 1 Hmp60 And Hmp110 Series Probes
IP54 rated probe with PC/ABS plastic housing and HUMICAP® 180R sensor. Lightweight probe with higher accuracy and faster thermal response time. Not for permanent outdoor use. Two analog output channels. Used with the Vaisala HM40 hand-held meter (requires special software configuration). VAISALA ________________________________________________________________________ 11... -
Page 14: Basic Features And Options
(CH1), selectable from 0 ... 1 V / 0 ... 2.5 V / 0 ... 5 V / 1 ... 5 V. - RS-485 interface available for all models (Modbus RTU and temporary service access with Vaisala Industrial Protocol serial line communication). -
Page 15: Output Options
Output Options All HMP60 series probes and HMP110 series probes, with the exception of the HMP110REF reference probe, can be ordered with analog output channels. Probes that use analog output can also use the RS-485 interface for temporary service access (Vaisala Industrial Protocol serial line commands) and Modbus RTU communication. -
Page 16: Filter Options
User's Guide _______________________________________________________________________ Filter Options For order codes, see section Options and Accessories on page 74. 1001-008 Figure 2 Filters for HMP60, HMP110, and HMP110T No. Filter Diameter Pore Size Plastic grid filter (fastest response time) 12 mm Membrane filter 12 mm 0.2 µm Stainless steel sintered filter... -
Page 17: Installation Accessories (Optional)
The probe mounting clamp is delivered in two parts that must be connected when it is used: Align the slots on the clamp parts as shown in Figure 5 below. 1209-001 Figure 5 Aligning Mounting Clamp Slots VAISALA ________________________________________________________________________ 15... -
Page 18: Figure 6 Sliding The Lower Clamp Part
User's Guide _______________________________________________________________________ Slide the lower clamp part over to the bottom end of the upper part as shown in Figure 6 below. 1209-002 Figure 6 Sliding the Lower Clamp Part Place the clamp to the intended location and secure the upper clamp part with a screw. -
Page 19: Probe Mounting Flange
Plastic Locking Bushing for HMP63 and HMP113 HMP63 and HMP113 can be connected to compatible Vaisala instruments using a plastic locking bushing that is placed over the probe. The bushing has a M15x1 thread. It is compatible with the HMT120 and HMT130 transmitters, and the HM40 hand-held meter. -
Page 20: Duct Installation Kit For Hmp60, Hmp110, And Hmp110T
Duct Installation Kit for HMP60, HMP110, and HMP110T The duct installation kit includes a plastic pipe with a flange (Vaisala order code: 215619). To install the probe with the duct installation kit, drill a hole to the duct wall, assemble the probe to the duct installation kit, slide the probe head through the hole, and attach the flange to the duct wall with four screws. -
Page 21: Loop Power Converter
- the desired quantity is on channel 1 - channel 1 must be scaled to 0 ... 2.5 V Wiring instructions are provided in section Wiring with the Loop Power Converter on page 27. 1001-001 Figure 11 Loop Power Converter VAISALA ________________________________________________________________________ 19... -
Page 22: Cables
User's Guide _______________________________________________________________________ Cables Connection cables have a straight, threaded female M8 connector on one end and open wires on the other end. Also other compatible M8 series cables can be used. 1210-063 Figure 12 Cable with Threaded Connector The USB Serial Interface Cable has a straight, threaded female M8 connector on one end, and a USB Type A male plug on the other. -
Page 23: Chapter 3 Installation
Before you connect an HMP60 or HMP110 series probe to a device, it is recommended to power off the device. Dimensions for HMP60, HMP110, and HMP110T 0912-103 Figure 14 HMP60, HMP110, and HMP110T Dimensions 0912-102 Figure 15 Installation with Plastic M12 Nuts, Dimensions VAISALA ________________________________________________________________________ 21... -
Page 24: Dimensions For Hmp63 And Hmp113
User's Guide _______________________________________________________________________ Dimensions for HMP63 and HMP113 0912-103 Figure 16 HMP63 and HMP113 Dimensions 73.5 0912-102 Figure 17 HMP63 and HMP113 with Plastic Locking Bushing, Dimensions 22 ___________________________________________________________________ M211060EN-H... -
Page 25: Mounting The Hmp60, Hmp110, And Hmp110T Probes
The following numbers refer to Figure 18 above: HMP60, HMP110, or HMP110T probe Duct installation kit Probe cable Slide the probe cable through the duct installation kit plastic pipe. Attach the cable to the probe. Attach probe assembly to the duct. VAISALA ________________________________________________________________________ 23... -
Page 26: Drilling Instructions For Duct Installation Kit
User's Guide _______________________________________________________________________ Drilling Instructions for Duct Installation Kit 0505-178 Figure 19 Drilling Instructions The following numbers refer to Figure 19 above: Mounting screw Tension screw Probe assembled in duct installation kit plastic pipe Drill the holes for the duct installation kit as follows: Use a 24-mm drill bit to drill a hole to the duct wall for the humidity probe. -
Page 27: Mounting The Hmp63 And Hmp113 Probes
- If you are using the probe with a HMT120, HMT130, or HM40 hand- held meter, use the plastic locking bushing. For information on these accessories, see section Installation Accessories (Optional) on page 15. NOTE Avoid placing the probe in a place where condensation can run onto the sensor. VAISALA ________________________________________________________________________ 25... -
Page 28: Wiring
Grounding method HMP63 and HMP113 It is recommended to use a shielded cable and connect the shield to ground. In the shielded cables supplied by Vaisala, the threaded connector connects the shield to the probe housing. HMP60, HMP110, There are two ways to ground the probe depending HMP110T, HMP110REF on installation type. -
Page 29: Wiring Multiple Digital Devices
Chapter 3 ________________________________________________________________ Installation Table 6 Pinout of the Probe Connector HMP60 / HMP63 / HMP110 analog / HMP110REF / Wire HMP113 / HMP110T HMP110 digital color 5 ... 28 VDC (V 0 ...1 / 0 ... 2.5 V) 5 ... 28 VDC Brown 8 ... -
Page 30: Figure 23 Wiring Multiple Devices Using Common Power Supply
User's Guide _______________________________________________________________________ 1708-002 Figure 23 Wiring Multiple Devices Using Common Power Supply 28 ___________________________________________________________________ M211060EN-H... -
Page 31: Wiring With The Loop Power Converter
8 ... 28 VDC. The operating voltage for the probe (5 VDC) is delivered by the module. For more information, see the Loop Power Converter Quick Reference Guide. 1210-031 Figure 24 Wiring with the Loop Power Converter Module VAISALA ________________________________________________________________________ 29... -
Page 32: Power Supply Requirements
The operating voltage for the HMP60 and HMP110 series probes must be in the following range: Table 7 Operating Voltage Ranges HMP60 / HMP63 / HMP110 analog / HMP110REF / HMP110 digital HMP113 / HMP110T 5 ... 28 VDC (V 0 ...1 / 0 ... 2.5 V) 5 ... 28 VDC 8 ... -
Page 33: Chapter 4 Operation
If the resistors are used, the possible increase in current consumption should be taken into account. Connecting to the Serial Interface The connection to the serial interface is via the 4-pin connector on the probe: see Wiring on page 26. VAISALA ________________________________________________________________________ 31... -
Page 34: Table 8 Default Serial Communication Settings
User's Guide _______________________________________________________________________ For temporary use of the serial interface (for example, calibration), you can use the optional USB cable (Vaisala order code: 219690). Before you can use the USB cable, you must install the provided USB driver on your PC: see Installing the Driver for the USB Cable on page 32. -
Page 35: Installing The Driver For The Usb Cable
COM port. There is no reason to uninstall the driver for normal use. However, if you wish to remove the driver files and all Vaisala USB cable devices, you can do so by uninstalling the entry for Vaisala USB Instrument Driver from the Programs and Features menu in the Windows Control Panel. -
Page 36: Terminal Application Settings For Digital Probes
Select the Serial settings category, and check that the correct COM port is selected in the Serial line to connect to field. You can check which port the USB cable is using with the Vaisala USB Instrument Finder program that has been installed in the Windows Start menu. -
Page 37: Figure 25 Putty Terminal Application
Chapter 4 _________________________________________________________________ Operation 0807-004 Figure 25 PuTTY Terminal Application VAISALA ________________________________________________________________________ 35... -
Page 38: Accessing Serial Line Command Interface (Rs-485 Mode) From Analog Or Modbus Mode
Select the Serial settings category, and check that the correct COM port is selected in the Serial line to connect to field. You can check which port the USB cable is using with the Vaisala USB Instrument Finder program that has been installed in the Windows Start menu. -
Page 39: Modbus Communication
HMP 60 and HMP110 series. Address 0 cannot be used on Modbus. *** Extra response delay can be used, for example, to avoid problems caused by direction-switching delays in bus converters. NOTE The instrument must be switched off and on before the communication setting changes take effect. VAISALA ________________________________________________________________________ 37... -
Page 40: Using Multiple Devices Over Rs-485
User's Guide _______________________________________________________________________ Using Multiple Devices over RS-485 When you use HMP60/HMP110 series probes for Modbus communication over the RS-485 interface, the maximum number of HMP60/HMP110 probes that can be connected to a system is 32 (with a communication speed of 19200 bps or lower). NOTE RS-485 termination must not be used with HMP60/HMP110 series probes. -
Page 41: List Of Serial Commands
View or set serial line answer minimum delay SEND [0 ... 255] Output the reading once SNUM View the serial number of the probe UNIT Select metric or non-metric output units VERS View software version of the probe VAISALA ________________________________________________________________________ 39... -
Page 42: Device Information And Status
Sensor number : H0000322 Sensor model : Intercap Order code : A12A0A2B0 Cal. date : 20120907 Cal. info : VAISALA/HEL Time : 00:21:05 Serial mode ANALOG Baud P D S 19200 N 8 1 Output interval: Serial delay Analog delay... -
Page 43: View Calibration Information
Use the CODE command to view the order code that has been stored in the probe. This command is useful if you need to order a new probe with the same options. CODE<cr> Example: code Order code : A12A0A2B0 VAISALA ________________________________________________________________________ 41... -
Page 44: View Serial Number
User's Guide _______________________________________________________________________ View Serial Number Use the SNUM command to view the serial number of the probe. SNUM<cr> Example: snum Serial number : H3640004 View Software Version Use the VERS command to display the software version of the probe. VERS<cr>... -
Page 45: Stop Measurement Output
SERI [b p d s]<cr> where baud rate (300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600) parity (n = none, e = even, o = odd) data bits (7 or 8) stop bits (1 or 2) VAISALA ________________________________________________________________________ 43... -
Page 46: Set Serial Interface Mode
Special serial interface mode that is only used for interoperability with Vaisala devices such as HMT120, HMT130, and HM40. This mode is set at Vaisala for probes that are ordered for such use. ANALOG No serial line, analog outputs active. For instructions on how to... -
Page 47: Set Output Interval
FILT [a.aaa]<cr> where a.aaa Range 0.001 ... 1.0. 1.0 = No filtering, latest measurement is output without averaging 0.5 = Average of last two measurements 0.1 = Average of approximately 16 measurements Example (default setting, no filtering): VAISALA ________________________________________________________________________ 45... -
Page 48: Set Probe Address
User's Guide _______________________________________________________________________ filt Filter 1.000 Example (set filtering to 0.5): filt 0.5 Filter 0.500 Set Probe Address Use the ADDR command to view or set the probe address. To operate in the POLL mode, the probe must have an address. If multiple probes share the same serial line, each probe must have a different address. -
Page 49: Set Measurement Units
UNIT [M/N]<cr> M is for metric units, N is for non-metric units. Quantity Metric Unit Non-Metric Unit ºC ºF ºC ºF Examples: unit Units : Metric unit n Units : Non metric VAISALA ________________________________________________________________________ 47... -
Page 50: Calibration Commands
User's Guide _______________________________________________________________________ Calibration Commands Calibrate Humidity Measurement Use the CRH command to perform a one-point or two-point correction to the capacitance measurement of the probe. This command changes the offset and/or gain of the humidity measurement, depending on the calibration and reference: - one-point calibration with a single <... -
Page 51: Clear Adjustment Of Rh Measurement
30 ºC. To update the measured value while the command is running, press enter without inputting a value. Example: two-point calibration 22.03 Ref1 ? 22 Press any key when ready ... 55.12 Ref2 ? 55 VAISALA ________________________________________________________________________ 49... -
Page 52: Clear Adjustment Of T Measurement
User's Guide _______________________________________________________________________ Clear Adjustment of T Measurement Use the CTCLR command to clear the adjustment of temperature measurement that has been done using the CT command. CTCLR<cr> Example: ctclr View User Adjustment Parameters Use the L command to view the current user adjustment parameters. This command is useful for checking the currently applied customer calibration. -
Page 53: Other Commands
Ch2 output 0 ... 1 V Example (set channel 1 to 0 ... 1 V and channel 2 to 0 ... 5 V): amode 0 2 Ch1 output 0 ... 1 V Ch2 output 0 ... 5 V VAISALA ________________________________________________________________________ 51... -
Page 54: Set Analog Output Parameters And Scaling
User's Guide _______________________________________________________________________ Set Analog Output Parameters and Scaling Use the ASEL command to show or set the output parameters and scaling of the analog outputs. This command is not in use in the digital- only HMP110 probe option. ASEL [ch1 ch2] [ch1low ch1high ch2low ch2high]<cr> where = Output parameter for channel 1. -
Page 55: Set Analog Output Error Indication Level
Ch2 error out: 1.000V ? NOTE The error output value is displayed only when there are minor electrical faults such as humidity sensor damage. When there is a severe device malfunction, the error output value is not necessarily shown. VAISALA ________________________________________________________________________ 53... -
Page 56: Extend Analog Output Range
User's Guide _______________________________________________________________________ Extend Analog Output Range Use the AOVER command to allow the analog output channels to exceed their specified range by 10%. The scaling of the quantity remains as before; the extra range is used for additional measurement range in the wet end. -
Page 57: Display Command List
Connect to the Probe in POLL Mode Use the OPEN command to connect to a probe that is in POLL mode. OPEN [aa]<cr> where address (0 ... 255) Example: open 1 HMP110 1 line opened for operator commands VAISALA ________________________________________________________________________ 55... -
Page 58: Close The Connection In Poll Mode
User's Guide _______________________________________________________________________ Close the Connection in POLL Mode The CLOSE command closes the connection to the probe. CLOSE<cr> Example: close line closed Reset the Probe Use the RESET command to reset the probe. Upon reset or power-up, the probe enters the serial mode that has been set with the SMODE command. -
Page 59: Chapter 5 Maintenance
Install a new filter on the probe, and tighten it so it is finger-tight. Make sure the filter sits straight and meets the threads properly. New filters can be ordered from Vaisala. For available filters, see section Filter Options on page 14. The order codes of the filters are listed in section Options and Accessories on page 74. -
Page 60: Calibration Procedure
(analog output, serial output, or the MI70 indicator). As a humidity reference you can use, for example, the Vaisala Humidity Calibrator HMK15. NOTE The probe cannot be used with the MI70 hand-held indicator when the probe is in analog mode. - Page 61 Use the ERRS command to see that no errors are active: errs Give the CRH command, with the %RH value of the reference as a parameter (in this case 11 for LiCl): crh 11 Check with the L command that the user adjustment parameters have changed. VAISALA ________________________________________________________________________ 59...
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Page 62: Two-Point Adjustment Of Rh Measurement (Hmp110 And Hmp113)
To perform a two-point adjustment to the capacitance measurement of the HMP110 or HMP113 using serial line you need: - The Vaisala USB cable (Vaisala order code: 219690) - PC with a terminal application. - Two humidity references. The first point requires a < 50 %RH humidity reference, the second point must be >... -
Page 63: One-Point Adjustment Of T Measurement (Hmp110, Hmp113, And Hmp110T)
To perform a one-point adjustment to the temperature measurement of the HMP110, HMP113, or HMP110T using serial line, you need: - The Vaisala USB cable (Vaisala order code: 219690) - PC with a terminal application. - One known and stable temperature reference. - Page 64 User's Guide _______________________________________________________________________ Start a terminal application and set the correct connection settings. The default serial settings are 19200 8 N 1. Remember to check which COM port the USB cable is using. Wait for 20 – 40 minutes for the temperature to stabilize. Start the terminal session and connect the USB cable to the probe.
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Page 65: Adjustment Procedure Using Mi70 Indicator (Hmp110 And Hmp113)
MI70 notifies you that automatic power off is disabled during adjustment mode, press OK to acknowledge. Select the RH parameter when prompted. Now the adjustment mode is on, press ADJUST to select the adjustment method. Select 1-point adjustment, press SELECT. Press OK to continue. VAISALA ________________________________________________________________________ 63... -
Page 66: One-Point Adjustment Of Temperature Measurement
User's Guide _______________________________________________________________________ Insert the probe in the LiCl salt chamber of the humidity calibrator (11 %RH). You can follow the stabilization from the GRAPH display. Press READY when the reading is stabilized. Give the reference humidity value by using the arrow buttons. Press OK. -
Page 67: Repair Maintenance
Pull out the old INTERCAP® sensor and insert a new one. Refer to Figure 27 below. Handle the new sensor by the plastic frame. DO NOT TOUCH THE SENSOR PLATE. 1210-034 Figure 27 Removing the Sensor Attach a new filter on the probe. VAISALA ________________________________________________________________________ 65... -
Page 68: Changing The Humicap® 180R/180V Sensor (Hmp110 And Hmp113)
User's Guide _______________________________________________________________________ Changing the HUMICAP® 180R/180V Sensor (HMP110 and HMP113) NOTE Replacing the humidity sensor of the HMP110 and HMP113 is not necessary in normal operation. If the accuracy of the probe does not seem to be within specification, it is likely that the accuracy can be restored by performing the adjustment procedure. -
Page 69: Chapter 6 Troubleshooting
Set Analog Output Error Indication Level on page 53. Solving Typical Problems You can check the error message via the serial interface by using the ERRS command. If you are unable to remove the errors, contact Vaisala technical support. See section Technical Support on page 68. Table 14... -
Page 70: Technical Support
Contact Vaisala technical support. Technical Support For technical questions, contact the Vaisala technical support by e-mail at helpdesk@vaisala.com. Provide at least the following supporting information: - Name and model of the product in question - Serial number of the product... -
Page 71: Chapter 7 Technical Data
0 ... +40 °C when dewpoint depression* < 15 °C ±2 °C temperature range -40 ... 0 °C and +40 ... +60 °C when dewpoint depression* < 10 °C ±3 °C *dewpoint depression = ambient temperature - dewpoint VAISALA ________________________________________________________________________ 69... -
Page 72: Performance (Hmp110)
90 ... 100 %RH ±4.0 %RH Factory calibration uncertainty (+20 °C) 0 … 90%RH ±1.1 %RH 90 … 100%RH ±1.8 %RH Humidity sensor Vaisala HUMICAP® 180R or Vaisala HUMICAP® 180V Stability ±2 %RH over 2 years Response time (t90) with plastic grid filter approx. -
Page 73: Performance (Hmp113)
90 ... 100 %RH ±4.0 %RH Factory calibration uncertainty (+20 °C) 0 … 90 %RH ±1.1 %RH 90 … 100 %RH ±1.8 %RH Humidity sensor Vaisala HUMICAP® 180R or Vaisala HUMICAP® 180V Stability ±2 %RH over 2 years Temperature Measurement range -40 ... -
Page 74: Operating Environment
User's Guide _______________________________________________________________________ Operating Environment Operating temperature range HMP60 -40 ... +60 °C HMP63 -40 ... +60 °C HMP110 -40 ... +80 °C HMP113 -40 ... +60 °C HMP110T -40 ... +80 °C Operating humidity range 0 ... 100 %RH, non-condensing Electromagnetic compatibility HMP60, HMP110, and HMP110T... -
Page 75: Mechanics (Hmp60, Hmp110, And Hmp110T)
Materials body PC/ABS blend grid filter PC (glass reinforced) cable Polyurethane of FEP Housing classification IP54 Cable connector 4-pin M8 (IEC 60947-5-2) Cable lengths 0.3 and 3 m Weight probe probe with 0.3 m cable 20 g VAISALA ________________________________________________________________________ 73... -
Page 76: Options And Accessories
Information on spare parts, accessories, and calibration products is available online at www.vaisala.com and store.vaisala.com. Table 15 Options and Accessories Description Item Code Vaisala INTERCAP® sensor, 1 piece ● ● 15778HM Vaisala INTERCAP® sensor, 10 pcs ● ● INTERCAPSET-10PCS Vaisala HUMICAP® 180R sensor ●... -
Page 77: Appendix Amodbus Reference
See Table 18 on page 76 for available registers. 43 14 2B 0E Read Device Identification See Table 19 on page 78 for available device identification objects. NOTE After power-up, wait for two seconds before sending Modbus requests. VAISALA ________________________________________________________________________ 75... -
Page 78: Modbus Register Map
User's Guide _______________________________________________________________________ Modbus Register Map Table 18 Modbus Register Map (Measurement Values and Settings) Logical PDU Address Register Description Data Format Register Notes Address (hexadecimal) Type (decimal) 00 00 RH (measured) * 32-bit float read-only 00 01 00 02 T (measured) 32-bit float read-only... - Page 79 Modbus mode by switching to the serial line mode as instructed in Accessing Serial Line Command Interface (RS-485 Mode) from Analog or Modbus Mode on page 36 and entering correct settings with serial line commands. VAISALA ________________________________________________________________________ 77...
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Page 80: Device Identification Objects
Communication test registers can be used to find the correct Modbus master configuration for the data types and the byte order of the Vaisala device. Test registers are also useful for testing if the register addresses should be specified as 1-based logical or 0-based PDU addresses on the master. - Page 81 *M211060EN*...
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