Limitorque
®
Master Station IV EEP-SN4001 FCD LMENIM5010-00-AQ – 03/19
46
From the DCS, the user must address the MSIV and poll according to the data table example given in the FC 05 configu-
ration. See following example of a request/response exchange between the DCS and MSIV.
Example of force coil command
Force coil 17 of MSIV ON(this will close the valve controlled by field unit 5)
Query: 01050010FF008DFF
Response: 01050010FF008DFF
Table 7.6 – Function Code 05 Example Message Breakdown
Query Response
01 MSIV Unit Address 01 MSIV Unit Address
05 Function 05 Function
00 Coil Address Hi 00 Coil Address Hi (Coil 17; MOV5)
10
1
Coil Address Lo 10 Coil Address Lo (Coil 17; MOV5)
FF Force Data Hi FF Force Data Hi
00
2
Force Data Lo 00 Force Data Lo
8DFF Error Check (CRC) 8DFF Error Check (CRC)
Note 1: 0010h equals coil address 0001 0001b (field unit 5, coil 1)
Note 2: FF00h requests the coil to be ON (0000h requests the coil to be OFF)
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 7.7 – Function Code 15 Example Message Breakdown
Query Response
01 MSIV Unit Address 01 MSIV 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: 002D00020103h equals coil addresses 00101101b (field unit 23, coil 2) and 00101110b (field unit 24, coil 1)
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