Flowserve Limitorque Master Station III - Manual (Page 44)

Limitorque Master Station III FCD LMENIM5001-02 – 12/13
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Table 8.2 - Function Code -02 Example Message Breakdown
Query Response
01 MSIII Unit Address 01 MSIII Unit Address
02 Function 02 Function
00 Starting Address Hi 02 Byte Count
50 Starting Address Lo 04 1 Data (Inputs 10088 - 10081; MOV2)
00 No. of Points Hi 08 2 Data (Inputs 10096 - 10089; MOV2)
10 No. of Points Lo BABE Error Check (CRC)
79D7 Error Check (CRC)
NOTE 1: 04h equals 0000 0100 (actuator stopped in mid-travel input bit is ON)
NOTE 2: 08h equals 0000 1000 (actuator Channel B fault input bit is ON)
8.2.5.3.2 Modbus FC 03 Read Holding Registers
Touching the “Modbus FC 03 Read Holding Registers” button will take the user to the Modbus Holding
Registers screen (Figure 8.24) for selection of desired field unit holding registers 3-15. Note that registers
8 and 9 are always included in the data table.
Figure 8.24 - Modbus Holding Registers
Selecting the “Next” button will advance the screen to the following sample data table screen: