Pid controller for the control of air flows or differential pressures (84 pages)
Summary of Contents for WIKA mensor CPC8000-H
Page 1
Operating instructions Hydraulic High Pressure Controller, Model CPC8000-H Hydraulic High Pressure Controller, Model CPC8000-H...
Page 2
Mensor is a registered trademark of Mensor, LP. All other brand and product names are trademarks or registered trademarks of their respective companies. Prior to starting any work, read the operating instructions! Keep for later use! WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Certifications and Accreditations Mensor is registered to ISO 9001:2015. The calibration program at Mensor is accredited by A2LA, as complying with both the ISO/ IEC 17025:2017 and the ANSI/NCSL Z540-1-1994 standards. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Multiple languages; change the language for on-screen text and number/date formats by simply touching one of the “national ■ flag” icons available in the setup screen. Multiple media capabilities. (Oil, water, and a variety of others upon request) ■ WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
ON. The system will go through an initialization process, which takes about 1 minute, and then a display will appear similar to the screen shown below. The instrument must be powered on for a minimum of 60 minutes to allow for best system accuracy. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
If power to the instrument is interrupted while ON it will shut down until the power is restored, then immediately resume operation. 2.4.2 USB Port The front panel USB port is the Host USB and is intended for software upgrades. Section 6 Operation explains this in detail. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
■ Factory Calibration Certificate ■ 1/4” Sno-Trik nut and ferrules for the Measure Control/DUT port ■ 6mm to 1/4” adapter for Supply port ■ Cross-check scope of delivery with delivery note. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Plugs and sockets must be protected from contamination. The manufacturer shall not be liable for claims of any type based on operation contrary to the intended use. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Special knowledge for working with instruments for hazardous areas: The skilled (electrical) personnel must have knowledge of ignition protection types, regulations and provisions for equipment in hazardous areas. Special operating conditions require further appropriate knowledge, e.g. of aggressive media. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
This marking on the instruments indicates that they must not be disposed of in domestic waste. The disposal is carried out by return to the manufacturer or by the corresponding municipal authorities (see EU directive 2012/19/ EU). WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Section 10. Specifications for power ratings. WARNING! POSSIBLE INJURY! Personnel shoudl not be in close proximity to the vent port during venting. Additional Warning and Caution notices are found throughout this manual. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Direct sunlight or proximity to hot objects ■ Mechanical vibration, mechanical shock (putting it down hard) ■ Soot, vapor, dust and corrosive gases ■ Hazardous environments, flammable atmospheres ■ Direct exposure to air vent ■ WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Use the proper equipment and tooling for pressure connections. Ensure that all tooling and process connections are appropriate for the pressure connection. Never use the wrong connector or tool while fastening a pressure port fitting or connector. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Be sure to always have the Measure/Control port connected to a test sample while using the CPC8000-H. If the test port is left open or disconnected, liquid can leak from the instrument. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
250V Slo-Blo fuses and is rated at 100 - 120 VAC or 200 - 240 VAC at 50 / 60 Hz. Power Inlet Figure 5.2.3 Power Inlet DANGER! Use caution when dealing with power cable and inlet connection. Hazard of electric shock: warning notice according to IEC 61010-1. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
9. If the controller fails to reach the maximum pressure, there may be a leak or more trapped air in the system. 10. Repeat Steps 2-7 if you suspect more air is trapped in the system Figure 5.2.4 Hydraulic Service App WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Do not position the equipment so that it is difficult to remove the power cord. The instrument is not intended for connection of long-distance lines, i.e. lines within a building that are longer than 30 m, or that leave the building (including lines of outdoor installations). WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Software ■ Gateway ■ Hydraulic ■ Port ■ DHCP Serial ■ Baud ■ Data Bits ■ Stop Bits ■ Parity ■ Echo Figure 6.1.2 - Menu Tree of the Setup Menus WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Initial Setup Section 6.2.1 and 6.2.2 are provided first so that the operator can initially check the information screen to verify the installed components and to change the language if needed. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Favorites can be chosen. The Settings App is used to navigate away from the main screen and configure the instrument. The Setpoints App is used to display various keypads, and the Favorites App is used to select favorited programs. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Hold, the user can select the active transducer from the primary and optional secondary transducer. The instrument must be fully vented in order to switch between ranges. The primary range will always be listed on top and the secondary range will be beneath. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
To clear an entry, select the cancel button and the blue text box will be reset. The backspace button is used to clear the last character that was entered. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
The up and down arrows at the bottom right of the screen allow for nudging the pressure reading by the increments displayed to the right. These increments can be changed using the Digital Step application. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Programs can be created, edited, deleted and saved in the Program application located under the Settings , then Applications>Programs. The example program (Figure 6.4.1.4.3) shows the selection of program named "Zero" and the sequence WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Figure 6.4.1.3 Favorites 6.4.1.4 Units and Pressure Type The Units button is always displayed. When the Units button is pressed, a selection of imperial and metric units will be displayed on WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
If a value outside this limit is entered, the instrument will display the value in red. Bar Graph Control Limits Figure 6.4.1.5 Bar Graph/Limits WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Measure/Control DUT port. This mode turns off all regulator control and puts the system in a static state. This allows the pressure to remain held at a specific setpoint or reading without any fluctuations caused by WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
(Figure 6.4.1.9.3). During Vent mode, the CPC8000-H will relieve all pneumatic and hydraulic pressure that is on the system. The pneumatic pressure will be evacuated through the Vent port on the CPC8000-HC and the hydraulic pressure will be released into the media reservoir located within the CPC8000-H. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Settings application is accessed. Settings Application Figure 6.4.2 Settings Application 6.4.2.1 General Settings The general settings screen options allows the user to change the language, auxiliary displays, main screen calibration functions, WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
■ Sensor 3: This option will display the pilot sensor (pneumatic pressure) in the current pressure units. ■ Units: The units display will provide a second set of pressure units to be visible on the home screen. The units can be selected WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
When the tare option is chosen, it will become displayed on the upper left side of the main screen (Figure 6.4.2.1.3-B). The tare function allows a tare offset to be applied to the sensor reading. When selected, the tare button will be highlighted yellow , the WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
(Figure 6.4.2.1.5). This can be adjusted from 0% to 100% and the volume setting can be saved to a configuration. By default, the volume is set to 100% WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
(Figure 6.4.2.1.7-B). To save the current settings to a configuration, select the Save button and then select a configuration and press the button (Figure 6.4.2.1.7-C). WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
This application allows adjustments to the filtering, resolution, units, rate units, and user units 1 and 2. All of these adjustments are applied as changes to the instrument software, they are not permanently stored on the sensor. Figure 6.4.2.2 Sensor Settings WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
The User unit settings can be found in the Sensor settings application by pressing the "User Units" button (Figure 6.4.2.2.4-A). These units are used to setup the "base unit" and along with a multiplier used to define User Unit 1 and User Unit 2. For each of WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
These entries provide a limit to the setpoint that can be chosen on the Main screen. This is often used to protect a DUT range that is smaller than the CPC8000-H range. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
3600. For an example, the graph below (Figure 6.4.2.3.2-C) shows the Stable Limits set to 0.005%FS and the Stable Delay set to 5 seconds. Figure 6.4.2.3.2-B Stable Delay Figure 6.4.2.3.2-A Stable Limits WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
If this threshold pressure is not reached, it will cycle the priming pump again. This process will continue until the Tank Pump value has been reached. The Tank Pump has a default value of 10 cycles but can be set anywhere between 3 and 99. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
6.4.2.4.2). In most cases, this can be set to "default" where the instrument automatically chooses the termination character based on the selected command set. The options for termination characters are as follows: WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
If a DHCP server fails to respond, DHCP will automatically turn off. Turning DHCP off allows the ethernet parameters to be edited and a static IP address assigned. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
In order to access the Service and Calibration applications that are mentioned in this chapter, use the following passwords: • Calibration Applications: 123456 • Service Applications: 987654 WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Before calibrating an Absolute transducer, attach a high accuracy reference transducer or a pressure calibration standard to the Measure/Control port of the CPC8000-H. Refer to Section 6.4.2.5.4 to adjust the head correction of the reference sensor to the Measure/Control port. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Before calibrating an Absolute transducer, attach a high accuracy reference transducer or a pressure calibration standard to the Measure/Control port of the CPC8000-H. Refer to Section 6.4.2.5.4 to adjust the head correction of the high accuracy reference sensor to the Measure/Control port. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 50
1. When the pressure is stable, select the [Reading] button under the ‘Actual’ label in the row labeled ‘Low Point’. This action will record the value under the ‘Reading’ label and it will appear with a green background where the [Reading] button was. Figure 6.4.2.5.2-2 – Low Point ‘Reading’ WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 51
5. After the pressure stabilizes, press the [Reading] button to record the instrument’s reading of the pressure input. This action will record the value under the ‘Reading’ label and it will appear with a green background where the [Reading] button was.. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 52
Point is greater than the Reference High Point, or the intercept from the calculation is outside of the positive and negative range. Determine why the failure occurred and then try again. Reference - Reference High Ratio of Span= Actual - Actual High WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
“Reference” or “Actual” columns and a data entry keypad will appear on the side bar. Enter and accept the point using the key pad and check mark. Pressing the Save button linearizes the internal transducer based on the “As Found” data entered. Figure 6.4.2.5.3 Linearization WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
(0) indicating that there is no head correction applied. [English] or [Metric] units can be chosen be pressing the related button. Figure 6.4.2.5.4 Head Correction 6.4.2.5.5 Programs The Programs application is accessible in the Applications tab. This application is used to create, view and edit programs that WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 55
Increases or decreases the current setpoint in current units (Numerical Entry). STEP% Increases or decreases the current setpoint by the percent full scale specified. WAIT Waits for a manual input or stable condition (Stable or Input) ZERO Zero’s active sensor (None) WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
The serial number can be found in the Settings > Info application. Remove USB Device: This will safely unmount the USB drive. Status: Displays whether or not a USB drive is available. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
The sequence can be stopped by pressing the Stop button. Empty Reservoir: This program is to be used by service centers to change the hydraulic media inside the hydraulic module. ■ WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
CPC8000-H to fail to meet control specifications or output pressure that could damage externally connected instruments. The Tune application can be unlocked by entering the Service/Admin password. Figure 6.4.2.5.10-A Figure 6.4.2.5.10 - B Figure 6.4.2.5.10-D Figure 6.4.2.5.10-C WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Calibrate or Service button on the left and entering the new password on the right. Confirm the password change by selecting the green check mark. The new password will now be active. Figure 6.4.2.5.11 Admin WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
The remote log displays all commands and responses sent and received by the CPC8000-H. These two menus are helpful in de-bugging and troubleshooting remote control software programs. The back arrow is used to return to the main Applications settings screen. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
IP addresses. The Ethernet communication port allows the CPC8000-H to communicate with computers using 10/100 Based-T specifications. Before using Ethernet communication, four parameters must be present: IP, Netmask, Gateway, and Port. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
RS-232 communications are transmitted over a three conductor, shielded cable terminated in a standard DB9 connector on the instrument end, and a different gender connector on the host end. The proper pin-outs are shown in the following illustration. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
4. <sp> pressure, minimum peak, maximum peak <cr><lf> 5. <sp> pressure, active sensor (P or S), active turndown (1-4) <cr><lf> 6. <sp> pressure, control point, "stable" or "slewing" <cr><lf> 7. <sp> pressure, "no barometer" or baro reading <cr><lf> WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Asset_tag 16 char string General purpose string for customer use. Asset_tag? <sp>ssssssssssssssss<cr><lf> Return customer asset tag string. Autorange ON or OFF Sets whether the autorange function is enabled or disabled WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 65
Returns the first auxiliary display selection. <sp>NONE,PEAK,RATE,RATE SETPOINT,DIGITAL I/O,UNITS,TARE,UNCERTAIN- TY<cr><lf> AUXDISP2 NONE,PEAK,RATE,RATE Sets the second auxiliary display selection. SETPOINT,DIGITAL I/O,UNITS,TARE,UNCER- TAINTY AUXDISP2? <sp>NONE,PEAK,RATE,RATE Returns the second auxiliary display selec- tion. SETPOINT,DIGITAL I/O,UNITS,TARE,UNCERTAIN- TY<cr><lf> WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 66
Control? <sp>(YES or NO)<cr><lf> Returns YES if instrument is in control. No if otherwise. Crate Slow, Medium, Fast, Variable Sets the control rate. Variable mode is a predetermined user-defined rate setpt. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 67
Returns the next error in the error queue. Errorno? <sp>Enn-text<cr><lf> Returns pcs400 error code and text Filter Off, Low, Normal, High Sets the reading filter 0, 80%, 92%, 95%. Filter? <sp> (filter)<cr><lf> Returns the reading filter. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 68
Returns the IP address of the instrument. ISBreakpt? <sp>+n.nnnnnE+nn<cr><lf> Returns the intelliscale breakpoint in pressure, where the accuracy changes from %FS to %Reading Keylock YES or NO Locks or unlocks the entire touch screen. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 69
Native units, pressure type, accuracy, calibra-tion date; TER, 1, Sensor Model, serial number, version, range minimum, range maximum, Native units, pressure type, accuracy, calibra-tion date; WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 70
(F) or metric (C). Mode STANDBY, MEASURE, Sets the operation mode CONTROL, VENT Mode? <sp>XXXXXX<cr><lf> Returns the operation mode Netmask nnn.nnn.nnn.nnn Sets the Ethernet network mask Netmask? <sp>nnn.nnn.nnn. Gets the Ethernet network mask nnn<cr><lf> WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 71
Peakmin? <sp>n.nnnnnE+nn<cr> Returns the minimum pressure since <lf> peakreset was sent. Peakreset None Resets the peak values. PILOT? <sp>+n.nnnnnE+nn<cr> Returns the pilot sensor (sensor 3) presssure <lf> reading WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 72
Reset the "instrument time on" counter to 0. MENT_TIME_ON RESET_INSTRU- Reset the "instrument control time on" count- MENT_CONTROL_ er to 0. TIME_ON Resolution <n> Sets the number of significant digits. See decpt WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 73
9600, 19200, 38400, 57600, Sets the serial baud rate. 115200 Sbaud? <sp>XXXX<cr><lf> Returns the serial baud data. Sdata 7 or 8 Sets the serial data bits. Sdata? <sp>n<cr><lf> Returns the serial data bits number. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 74
Stable,Error or both Sets the CPC8000-H to issue a service request (SRQ) over the IEEE when the pressure control is stable, or an error occurs. These are 80 hex and 40 hex respectively. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 75
(for example the Mensor command set will be different from the SCPI command set). Accepts the following: CRLF, CR, LF, EOI, NONE, DEFAULT Termchar? <sp>CCCC<cr><lf> Returns the termination character. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 76
Alias for “Upperlimit”. See Upperlimit ULimit? <sp>xxxxxxx<cr><lf> Alias for “Upperlimit?”. See Upperlimit? Unlock None Releases Acquire locks See Acquire? And Release? UpperLimit Sets the upper control limit for the active transducer. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
:DATE? Returns date of cal “MM/DD/YY” :DATE <i,i,i> Sets date of cal YYYY,MM,DD :ZERO? Returns zero offset. :ZERO <n> Sets the zero offset. :ZERO:RUN Start autozero sequence. :ZERO:STOP Stop autozero sequence WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 78
Return error code, description. :KLOCk ON | OFF | 1 | 0 Sets the keylock state. :PRESet Load default values. :SAVe no function (not needed). :VERSion? Return SCPI version 1994.0. TEST WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 79
ON or 1 = Control OFF or 0 = Measure. :STATe? Returns 0 for measure 1 for control. :MODE MEASure/CONTrol/VENT Sets the mode indicated. :MODE? Returns the mode string. :STABle? Returns 1 if stable 0 if not. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Page 80
-4, default during controller adaption -5, calculation fault -6, abandoned process :TARE Tare the current reading. The same :STATe ON/OFF/1/0 tare value is applied to all measuring transducers. Returns the tare value. :STATe? WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Filling nozzle is connected to the media reservoir. This tank can leak if the reservoir is overfilled or tilted. If an external reservoir is used, stabilize the reservoir on a flat surface. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Remove the optional barometric reference transducer with the thumb screw. If the screw is too tight to remove by hand, a small slotted screwdriver may be used. To replace or reinstall these transducers, install each in the reverse order as the removal process. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
15-45C. The process is referred to as dynamic compensation because each reading is adjusted before it is output to the display or to a communication bus. Thus, a calibrated CPC8000-H operated within its temperature band, and with proper zero and span adjustments, will provide accurate pressure measurements. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
Calibration Services by Mensor or WIKA Worldwide Mensor and WIKA worldwide have extensive experience and knowledge of Mensor products. Calibration of the transducers in these products can be performed at the addresses below or by competent internal or external labs using the procedures in this...
(Zero), span offset (Span), calibration interval and transducer software version can be seen on this screen. These values will show all the current settings that are active on all transducers installed. Figure 8.2.6 Calibration Data WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
▶ Observe the information in the material safety data sheet for the corresponding medium. ▶ Only disconnect the pressure measuring instrument/measuring assembly/test and calibration installations once the system has been depressurized. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
This marking on the instruments indicates that they must not be disposed of in domestic waste. The disposal is carried out by return to the manufacturer or by the corresponding municipal authorities. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
The precision is the maximum deviation between two measurements at one point under laboratory conditions which contains linearity, hysteresis and repeatability of the measuring instrument. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 89
4 ... 7 digits Input methods capacitive touchscreen Connections Pressure connections 7/16"-20 F SAE Pressure adapters 6 mm FITOK threaded pipe connection; others on request ® Filter elements all pressure ports have 40-micron filters WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
In such circumstances the operator is expected to take the appropriate measures. 9) Calibration in a horizontal position/operating position. 10) Ranges over 2,500 bar must receive Dakks 3.1 calibration certificate.. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
10. Specifications 10.4 Dimensions in mm (in) 10.4.1 CPC8000-H with optional rolling rack WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
The CPC8000-H can be ordered with up to two internal reference pressure transducers. These are used to monitor pressure on the Measure/Control port. These transducers can use a calibration sled with power supply and software to perform calibrations at their required calibration interval. WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
The two factory available operating fluids for the CPC8000-H are Shell Tellus and Sebacate oil. If the CPC8000-H uses a different media, the user will need to purchase the additional media from an external source. WIKA operating instructions hydraulic high pressure controller model CPC8000-H...
@ 0°C hectopascals megapascals millimeters of water @ 20°C mm H2O 20°C centimeter of water @ 20°C cm H2O 20°C meters of water @ 20°C m H2O 20°C WIKA operating instructions hydraulic high pressure controller, model CPC8000-H...
Page 99
WIKA subsidiaries worldwide can be found online at www.wika.com. Mensor Corporation WIKA Alexander Wiegand SE & Co. KG 201 Barnes Drive Alexander-Wiegand-Straße 30 San Marcos, TX 78666 • USA 63911 Klingenberg • Germany Tel. (+1) 512 3964200-15 Tel. +49 9372 132-0...
Need help?
Do you have a question about the mensor CPC8000-H and is the answer not in the manual?
Questions and answers