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SC100/200 Series Function Block Application Manual EM-6460-C
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BLOCK DIAGRAM EXAMPLE (1): USING CONTACT DISTRIBUTOR BLOCK
Using the external feedback (output tracking) function of the primary loop, the primary loop MV tracks current SP of the sec-
ondary loop when the secondary is at Loc mode setting. This configuration realizes smooth control output transition of the
primary loop with automatic tracking when the secondary loop control is switched to/from the Loc mode.
Contact Distributor block enables the C/L SW status signal to directly control the external feedback SW, without needing a
sequential control block.
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CODING LIST ESSENTIALS FOR THE EXAMPLE (1)
GROUP
ITEM
DATA
FUNCTION
02
10
56
2 2
0 3 2 2
Primary loop control block
External feedback connection terminal (secondary loop current SP)
03
10
24
2 2
0 2 2 5
Secondary loop control block
CAS connection terminal (primary loop MV)
30
10
11
12
8 7
0 3 0 3
0 3 1 0
Contact distributor block
Input terminal specified to the secondary loop C/L SW status
Destination terminal specified to the secondary loop external feedback SW
flow
temp
PV
FIC
G03
TIC
G02
external feedback SW
C/L status
current SP
external feedback
SP
MV
MV
PV
DCN
Contact Distributor
G30
