Flowserve Limitorque Master Station III - Manual (Page 51)

51
Limitorque Master Station III FCD LMENIM5001-02 – 12/13
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Example of force multiple coils command
Force coil 2 of field unit 23 ON. This will CLOSE the valve controlled by field unit 23. Additionally, force
coil 1 of field unit 24 ON. This will OPEN the valve controlled by field unit 24.
Query: 010F002D000201033290
Response: 010F002D00024403
Table 8.7 - Function Code -15 Example Message Breakdown
Query Response
01 MSIII Unit Address 01 MSIII Unit Address
0F Function 0F Function
00 Coil Address Hi 00 Coil Address Hi (Coil 46; MOV23)
2D Coil Address Lo 2D Coil Address Lo (Coil 46; MOV23)
00 Quantity of Coils Hi 00 Quantity of Coils Hi
02 Quantity of Coils Lo 02 Quantity of Coils Lo
01 Byte Count 4403 Error Check (CRC)
03 Force Data Lo
3290 Error Check (CRC)
NOTE 1: 002D00020103h equals coil addresses 00101101b (field unit 23, coil 2) and 00101110b (field unit 24, coil 1)
8.2.5.3.4 Modbus FC 06/16 Preset Registers
Touching the “Modbus FC 06/16 Preset Registers” button will take the user to the Modbus Holding Registers screen
(Figure 8.28) for configuration of desired number of holding registers to be written per MOV. The 06 command presets
a value into a single-holding register (Figure 8.28), while the 16 command presets a value into a block of multiple
holding registers (Figure 8.29). The data table for these function codes permit either one or two write registers per
field unit.
Figure 8.28 - Modbus Holding Registers-One Per MOV
Figure 8.29 - Modbus Holding Registers-Two Per MOV