Limitorque
®
Master Station IV EEP-SN4001 FCD LMENIM5010-00-AQ – 03/19
42
Example of read multiple registers command
Poll MSIV for 2 registers starting at register 27 (i.e. field unit #14)
Query: 0103001A0002E5CC
Response: 010304003200445BCF
Table 7.3 – Function Code 03 Example Message Breakdown
Query Response
01 MSIV Unit Address 01 MSIV Unit Address
03 Function 03 Function
00 Starting Address Hi 04 Byte Count
1A Starting Address Lo 00 Data Hi (Register 40027; MOV14)
00 No. of Points Hi 32
1
Data Lo (Register 40028; MOV14)
02 No. of Points Lo 00 Error Check (CRC)
E5CC Error Check (CRC) 44
2
Data Lo Register 40028; MOV14)
5BCF Error Check (CRC
Note 1: 0032h equals 50 decimal (actuator position in percent format)
Note 2: 0044h equals 68 decimal or 0000 0000 0100 0100 (actuator stopped between limits in local mode)
Table 7.4 – Function Code 03 Holding Registers
Register # Description Meaning
10 Fault Register 16 Bits of field status
Bit 0 Open inhibit active
Bit 1 Close inhibit active
Bit 2 Not used
Bit 3 Not used
Bit 4 One or more phases are missing
Bit 5 Reverse phase sequence is occurring
Bit 6 ESD conflict
Bit 7 Inhibit conflict
Bit 8 CSE in local/stop (input must be set for CSE and enabled)
Bit 9 Not used
Bit 10 Network emergency shutdown is active
Bit 11 Local PB emergency shutdown is active
Bit 12 Field unit microprocessor has reset since the last poll
Bit 13 MX in stop mode
Bit 14 Opening in local mode
Bit 15 Closing in local mode
11 Digital Outputs Value of 16 Digital Outputs
Bit 0 Close contactor (Interlocked)
Bit 1 Open contactor (Interlocked)
Bit 2 S1 or R1 (Opt)
Bit 3 S2 or R2 (Opt)
Bit 4 R3 (Opt)
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