VM600 networking manual MAVM600-NET/E 9 - 13
Edition 9 - February 2018
MPC4 card
SETTING UP A MODBUS CONNECTION (CPUM SW VERSION 071 OR LATER)
NOTE: Bits b6 to b15 are not accessible using Modbus functions 01 or 02.
Discrete values are not available individually. For example, you cannot request only bit b3,
that is, all eight bits have to be requested.
9.4.2.2 Speed channel status register
The discrete values available for the MPC4 speed status register are mapped as shown in
Table 9-11.
Table 9-10: Mapping of discrete values for the MPC4 channel status register
Bit Status Meaning when not set (0) Meaning when set (1)
b0 Invalid Point is not defined Point is defined
b1 A+ Channel not in Alarm+ condition Channel in Alarm+ condition
b2 A− Channel not in Alarm− condition Channel in Alarm− condition
b3 D+ Channel not in Danger+ condition Channel in Danger+ condition
b4 D− Channel not in Danger− condition Channel in Danger− condition
b5 SOK OK system check failed Sensor OK
Additional available status information added to this register:
b6 CME No common mode rejection error Common mode rejection error
b7 ISE No input saturation error Input saturation error
b8 PSE No PGA saturation error PGA saturation error
b9 DSE No DSP saturation error DSP saturation error
b10 TRL No MPC track lost error MPC track lost error
b11 TOR No track out of range error Track out of range error
b12 to
b15
Not used
Table 9-11: Mapping of discrete values for the MPC4 speed channel status register
Bit Status Meaning when not set (0) Meaning when set (1)
b0 Invalid Point is not defined Point is defined
b1 A+ Channel not in Alarm+ condition Channel in Alarm+ condition
b2 A− Channel not in Alarm− condition Channel in Alarm− condition
b3 Not used
b4 Not used
b5 SOK OK system check failed Sensor OK
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