1. Model MH-4-CAN 1. Model MH-4-CAN 1.1 General information The MH-4-CAN is a pressure sensor providing measurements through a CANopen interface implementing device profile DS404. 1.2 Features Sample rate (pressure): 640 µs Settling time: 2 ms 1.3 CANopen feature summary...
If the measured value has changed by more than a delta value compared to the last transferred measured value. In order to change the transmission type object 1800h.2 must be changed to the appropriate transmission type using SDO write access (see 2.5). WIKA special documentation, model MH-4-CAN...
SDO (Service Data Object): Used to access any object of the object dictionary. Offers ■ read and write functionality. Usually used to indentify and configure the sensor. WIKA special documentation, model MH-4-CAN...
Service Data Objects are used to access the entries of the transmitters object dictionary. Therefore the dictionary entries are accessed by index and subindex. Therefore the master sends a specific request message followed by an reply from the sensor. WIKA special documentation, model MH-4-CAN...
Data type does not match, length of service parameter does not match 0607 0012h Data type does not match, length of service parameter too high 0607 0013h Data type does not match, length of service parameter too low 0609 0030h Invalid value for parameter (download only) WIKA special documentation, model MH-4-CAN...
Bits 24..31 Bits 16..23 Bits 8..15 Bits 0..7 Index (high byte) Index (low byte) Subindex Data length in bits Please note, that the data length needs to match the entries data size from the object dictionary. WIKA special documentation, model MH-4-CAN...
Set TPDO invalid by setting bit “valid” to 1b (1800h.1) ■ Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 601h Index Data Disable mapping by setting index 1A00.0 to 00h ■ Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 601h Index Data WIKA special documentation, model MH-4-CAN...
4.1.16 (Object 1F80h). In case of an EMCY the device stays in its current state. 3.5.1 Module Control Protocol NMT Master request: Byte0 Byte1 Node-ID (0 = all nodes) WIKA special documentation, model MH-4-CAN...
This object holds errors that have occurred on the transmitter and have been signalled via Emergency Object. It represents an error history containing up to 4 errors. For a list of possible error entries please refer to chapter 5. WIKA special documentation, model MH-4-CAN...
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Object Type ARRAY Sub-Index Parameter Name Number of Errors Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Standard Error Field Parameter Name Object Type Data Type UNSIGNED32 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
Default Value PDO Mapping 4.1.4 Object 1005h: COB-ID SYNC COB-ID of the Synchronization object. Index 1005h Parameter Name COB ID SYNC Object Type Data Type UNSIGNED32 0x00000001 Lower Limit Access Default Value 0x00000080 PDO Mapping WIKA special documentation, model MH-4-CAN...
With a read access the device provides information about its saving capabilities. Sub-index 1: All parameters ■ Sub-index 2: Communication Parameters ■ Sub-index 3: Application parameters ■ For saving the signature “save” (0x65766173) must be written. WIKA special documentation, model MH-4-CAN...
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Object Type Data Type UNSIGNED32 Access PDO Mapping Sub-Index Parameter Name Save Communication Parameters Object Type Data Type UNSIGNED32 Access PDO Mapping Sub-Index Parameter Name Save Application Parameters Object Type Data Type UNSIGNED32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
Parameter Name Number of entries Object Type UNSIGNED8 Data Type Lower Limit Higher Limit 0x7F Access Default Value PDO Mapping Sub-Index Parameter Name Restore all Default Parameters Object Type Data Type UNSIGNED32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
80h+Node-ID. In order to save a COB-ID different from this pattern use 1010h.2 (Save communication parameters) instead. Index 1014h Parameter Name COB ID EMCY Object Type Data Type UNSIGNED32 Lower Limit 0x00000001 Higher Limit 0xFFFFFFFF Access Default Value $NODEID+0x80 PDO Mapping WIKA special documentation, model MH-4-CAN...
Sub-index 2: Manufacturer specific product code ■ Sub-index 3: Revision number. Bit 31-16 is the major, Bit 15-0 the minor revision ■ number. Sub-index 4: Manufacturer specific serial number. ■ Index 1018h Parameter Name Identity Object Object Type RECORD WIKA special documentation, model MH-4-CAN...
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Data Type UNSIGNED32 Access Default Value PDO Mapping Sub-Index Parameter Name Product Code Object Type Data Type UNSIGNED32 Access PDO Mapping Sub-Index Parameter Name Revision number Object Type Data Type UNSIGNED32 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
180h+Node-ID. In order to save a COB-ID different from this pattern use 1010h.2 (Save communication parameters) instead. Index 1800h to 1801h Parameter Name Transmit PDO Communication Parameter Object Type RECORD Sub-Index Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
Contains the mapping for the PDOs the transmitter is able to transmit. The sub-index 0h contains the number of valid entries within the mapping record. This number of entries is also the number of the application variables which shall be transmitted with the corresponding PDO. WIKA special documentation, model MH-4-CAN...
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Number of entries Object Type Data Type UNSIGNED8 Lower Limit Higher Limit Access Default Value PDO Mapping Sub-Index Parameter Name PDO Mapping Entry Object Type Data Type UNSIGNED32 Access Default Value 0x61300120 (1A00h) 0x61300220 (1A01h) PDO Mapping WIKA special documentation, model MH-4-CAN...
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Object Type Data Type UNSIGNED32 Access PDO Mapping Sub-Index Parameter Name PDO Mapping Entry_4 Object Type Data Type UNSIGNED32 Access PDO Mapping Sub-Index Parameter Name PDO Mapping Entry_5 Object Type Data Type UNSIGNED32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
0000 0000h: The NMT master shall start the NMT slave. ■ 0000 0008h: The NMT master shall not start the NMT slave and the application may ■ start the NMT slave. Index 1F80h Parameter Name NMTStartup Object Type Data Type UNSIGNED32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping Sub-Index Parameter Name AI Sensor Type 1 Object Type Data Type UNSIGNED16 Access Default Value PDO Mapping Sub-Index Parameter Name AI Sensor Type 2 Object Type Data Type UNSIGNED16 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping Sub-Index Parameter Name AI Operating Mode 1 Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Parameter Name AI Operating Mode 2 Object Type UNSIGNED8 Data Type Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
In this case it is needed to switch to object 6130h (output as REAL32) or 9130h (output as INTEGER32). Index 6126h Parameter Name AI Scaling Factor Object Type ARRAY WIKA special documentation, model MH-4-CAN...
In this case it is needed to switch to object 6130h (output as REAL32) or 9130h (output as INTEGER32). Index 6127h AI Scaling Offset Parameter Name Object Type ARRAY WIKA special documentation, model MH-4-CAN...
4.2.6 Object 6130h: AI Input PV The analog input process value in REAL32 format. Subindex 1 contains the pressure measurement value Subindex 2 contains the temperature measurement value Index 6130h Parameter Name AI Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
0x004E0000 = bar ■ 0x00AB0000 = psi ■ 0x06220000 = MPa ■ The temperature channel (analog input channel 2) provides the following units: 0x002D0000 = °C ■ 0x00AC0000 = °F ■ 0x00050000 = K ■ WIKA special documentation, model MH-4-CAN...
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Value Range 0x00AB0000 = psi 0x06220000 = MPa Sub-Index Parameter Name AI Physical Unit PV 2 Object Type Data Type UNSIGNED32 Access PDO Mapping 0x002D0000 = °C Value Range 0x00AC0000 = °F 0x00050000 = K WIKA special documentation, model MH-4-CAN...
Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Parameter Name AI Decimal Digits PV 1 Object Type Data Type UNSIGNED8 Access PDO Mapping Value Range 0 - 5 WIKA special documentation, model MH-4-CAN...
Object Type ARRAY Sub-Index Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Parameter Name AI Interrupt Delta Input PV 1 Object Type Data Type REAL32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping Sub-Index Parameter Name Interrupt Lower Limit Input PV 1 Object Type Data Type REAL32 Access PDO Mapping Sub-Index Parameter Name Interrupt Lower Limit Input PV 2 Object Type Data Type REAL32 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping 4.2.12 Object 6136h: AI Interrupt Hysteresis Input PV Indicates the hysteresis on the analog input at which an interrupt is triggered. Index 6136h Parameter Name AI Interrupt Hysteresis Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
This object indicates the lower limit of the expected PVs. PVs, which are lower than this limit, are marked as negative overloaded (see also object 6150h). Index 6148h Parameter Name AI Span Start Object Type ARRAY WIKA special documentation, model MH-4-CAN...
This object indicates the upper limit of the expected PVs. PVs, which are exceeding this limit, are marked as positive overloaded (see also object 6150h). Index 6149h Parameter Name AI Span End Object Type ARRAY WIKA special documentation, model MH-4-CAN...
F001h – User Input Overload (see chapter 5) ■ AI Input PVs will be set to the following values ■ 6130h: NAN (not a number) ■ 7130h: -32768 (minimum of int16) ■ 9130h: -2147483648 (minimum of int32) ■ WIKA special documentation, model MH-4-CAN...
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Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Parameter Name AI Status 1 Object Type Data Type UNSIGNED8 Access PDO Mapping Sub-Index Parameter Name AI Status 2 Object Type Data Type UNSIGNED8 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping 4.2.17 Object 61A1h: AI Filter Constant Indicates the number of steps used for filter calculation. For more information please refer to the CiA documents. Index 61A1h Parameter Name AI Filter Constant Object Type ARRAY WIKA special documentation, model MH-4-CAN...
Subindex 2 contains the field value of the measured temperature Index 7100h Parameter Name AI Input FV Object Type ARRAY Sub-Index Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
6130h (output as REAL32) or 9130h (output as INTEGER32). Index 7130h Parameter Name AI Input PV Object Type ARRAY Sub-Index Parameter Name Number of entries Object Type UNSIGNED8 Data Type Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
If set to 0 the delta input PV interrupt is disabled. Index 7133h Parameter Name AI Interrupt Delta Input PV Object Type ARRAY Sub-Index Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping WIKA special documentation, model MH-4-CAN...
Object Type ARRAY Sub-Index Parameter Name Number of entries Object Type Data Type UNSIGNED8 Access Default Value PDO Mapping Sub-Index Parameter Name Interrupt Lower Limit Input PV 1 Object Type Data Type INTEGER16 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
PDO Mapping Sub-Index Parameter Name Interrupt Upper Limit Input PV 1 Object Type Data Type INTEGER16 Access PDO Mapping Sub-Index Parameter Name Interrupt Upper Limit Input PV 2 Object Type Data Type INTEGER16 Access PDO Mapping WIKA special documentation, model MH-4-CAN...
This object indicates the lower limit of the expected PVs. PVs, which are lower than this limit, are marked as negative overloaded (see also object 6150h). Index 7148h Parameter Name AI Span Start Object Type ARRAY WIKA special documentation, model MH-4-CAN...
This object indicates the upper limit of the expected PVs. PVs, which are exceeding this limit, are marked as positive overloaded (see also object 6150h). Index 7149h Parameter Name AI Span End Object Type ARRAY WIKA special documentation, model MH-4-CAN...
Object 9130h: AI Input PV The analog input process value in INTEGER32 format. Subindex 1 contains the pressure measurement value Subindex 2 contains the temperature measurement value Index 9130h Parameter Name AI Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
PV is equal or greater delta input PV since the last PDO transmission, the PDO will be transmitted again. If set to 0 the delta input PV interrupt is disabled. Index 9133h Parameter Name AI Interrupt Delta Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
Access PDO Mapping 4.2.28 Object 9134h: AI Interrupt Lower Limit Input PV Indicates the lower limit at which an interrupt is triggered. Index 9134h Parameter Name AI Interrupt Lower Limit Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
Access PDO Mapping 4.2.29 Object 9135h: AI Interrupt Upper Limit Input PV Indicates the upper limit at which an interrupt is triggered. Index 9135h Parameter Name AI Interrupt Upper Limit Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
PDO Mapping 4.2.30 Object 9136h: AI Interrupt Hysteresis Input PV Indicates the hysteresis on the analog input at which an interrupt is triggered. Index 9136h Parameter Name AI Interrupt Hysteresis Input PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
This object indicates the lower limit of the expected PVs. PVs, which are lower than this limit, are marked as negative overloaded (see also object 6150h). Index 9148h Parameter Name AI Span Start ARRAY Object Type WIKA special documentation, model MH-4-CAN...
This object indicates the upper limit of the expected PVs. PVs, which are exceeding this limit, are marked as positive overloaded (see also object 6150h). Index 9149h Parameter Name AI Span End ARRAY Object Type WIKA special documentation, model MH-4-CAN...
This object provides the measuring range start of the transmitter in the corresponding original physical unit (see 2012h). The value can also be found on the transmitter device type label. Index 2010h Parameter Name Measuring Range Start PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
This object provides the measuring range end of the transmitter in the corresponding original physical unit (see 2012h). The value can also be found on the transmitter type label. Index 2011h Parameter Name Measuring Range End PV ARRAY Object Type WIKA special documentation, model MH-4-CAN...
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This object provides the original physical unit of the transmitter. The value can also be found on the device type label. For more details on the physical unit refer to 4.2.7 (Physical unit AI PV) Index 2012h Parameter Name Original Physical Unit PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
4.3.4 Object 2020h: Minimum Value PV This object provides the minimum process value of the AI Input PV (see 6130h) in the corresponding physical unit (see 6131h) since power up. Index 2020h Parameter Name Minimum Value PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
4.3.5 Object 2021h: Maximum Value PV This object provides the maximum process value of the AI Input PV (see 6130h) in the corresponding physical unit (see 6131h) since power up. Index 2021h Parameter Name Maximum Value PV ARRAY Object Type WIKA special documentation, model MH-4-CAN...
The signature “zero” (‘z’ = 0x7A; ‘e’ = 0x65; ‘r’ = 0x72; ‘o’ = 0x6F) needs to be add to the transmitted value to reset the specific PV Counter. Index 2022h Parameter Name Reset Min Max Value PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
1% tolerance from the value of its final condition. Index 2023h Parameter Name Damping PV Object Type ARRAY WIKA special documentation, model MH-4-CAN...
Reset All Nodes or power on reset. Restoring the default parameters via Object 1011h has no effect to the Node-ID, that means the Node-ID remains untouched Index 2320h Parameter Name Node-ID Object Type UNSIGNED32 Data Type Access PDO Mapping WIKA special documentation, model MH-4-CAN...
“error event”. As long as the error is pending, no new EMCY message with the same Emergency Error Code will be sent. In case that an Emergency Error Code is sent the correspondent Bit in the Error Register (1001h) will be set. WIKA special documentation, model MH-4-CAN...
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4200h – Device Temperature ■ The Device Temperature is too low (-50°C) or high (+110°C). Please check the environmental conditions Byte3 Byte4 Byte5 Byte6 Byte7 2 (AI Channel AI status Number) (6150h) Manufacturer specific error field: WIKA special documentation, model MH-4-CAN...
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8140h - CAN recovered from bus off ■ The CAN controller was in the bus off state and is now again active. Please check the bus connection, baudrate, termination, etc. Manufacturer specific error field: Byte3 Byte4 Byte5 Byte6 Byte7 WIKA special documentation, model MH-4-CAN...
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CAN controller has errors detected (PASSIVE mode) CAN controller went into Bus-Off General failure of physical layer detected Fault on CAN-H detected (Low Speed CAN) Fault on CAN-L detected (Low Speed CAN) WIKA special documentation, model MH-4-CAN...
Device profile for measuring devices and closed-loop controllers Part 1: Generic objects and generic PDO mapping CiA 305 V3.0.0 Layer setting services (LSS) and protocols 7. Change log Document version Reason for change Date Initial release WIKA special documentation, model MH-4-CAN...
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WIKA special documentation, model MH-4-CAN...
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WIKA subsidiaries worldwide can be found online at www.wika.com. WIKA-Niederlassungen weltweit finden Sie online unter www.wika.de. WIKA Alexander Wiegand SE & Co. KG Alexander-Wiegand-Strasse 30 63911 Klingenberg • Germany Tel. +49 9372 132-0 +49 9372 132-406 info@wika.de www.wika.de WIKA special documentation, model MH-4-CAN...