Flowserve Limitorque Master Station III - Manual (Page 45)

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Limitorque Master Station III FCD LMENIM5001-02 – 12/13
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Figure 8.25 - FC-03 Sample Data Table
NOTE: Data table shown with only registers 8 and 9 (Position and Status) selected.
This function code is used to read the binary contents of holding registers. This function code is
typically used during the network polling cycle. A network poll must consist of field unit registers 8
(Position) and 9 (Status) at a minimum. See Table 8.4 for a complete listing of the holding registers.
Example of read multiple registers command
Poll Master Station for 2 registers starting at register 27 (i.e., field unit #14)
Query: 0103001A0002E5CC
Response: 010304003200445BCF
Table 8.3 - Function Code -03 Example Message Breakdown
Query Response
01 MSIII Unit Address 01 MSIII 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 40027; MOV14)
02 No. of Points Lo 00 Data Hi (Register 40028; MOV14)
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)