Fluid Components International ST100 Series Foundation Fieldbus - Manual (Page 22)

ST100 Series Foundation Fieldbus
20 Fluid Components International LLC
PID Block
This block offers control algorithms that use the Proportional, Integral and Derivative terms. The algorithm is non-iterative or ISA. In this algorithm
the GAIN is applied to all terms of the PID, and the proportional and the integral actuate over the error, and the derivative actuates over the PV value.
ST100 PID Block
INDEX PARAMETER DATA TYPE (LENGTH) INITIAL VALUE DESCRIPTION
1 ST_REV Unsigned16 0
2 TAG_DESC OctString(32) Blanks
3 STRATEGY Unsigned16 0
4 ALERT_KEY Unsigned8 0
5 MODE_BLK DS-69 OOS
6 BLOCK_ERR Bitstring(2)
7 PV DS-65 Bad ns 0 ns = non specific
8 SP DS-65 G C/0 G C/0 = GOOD_CAS/0
9 OUT DS-65 BOS BOS = BAD_Out of service 0
10 PV_SCALE DS-68 0-100%
11 OUT_SCALE DS-68 0-100%
12 GRANT_DENY DS-70 0,0
13 CONTROL_OPTS Bitstring(2) 0
14 STATUS_OPTS Bitstring(2) 0
15 IN DS-65 BNc BNc= Bad-Not connected 0
16 PV_FTIME Float 0
17 BYPASS Unsigned8 Unititialized
18 CAS_IN DS-65 BNc BNc= Bad-Not connected 0
19 SP_RATE_DN Float +INF
20 SP_RATE_UP Float +INF
21 SP_HI_LIM Float 100
22 SP_LO_LIM Float 0
23 GAIN Float 0
24 RESET Float +INF
25 BAL_TIME Float 0
26 RATE Float 0
27 BKCAL_IN DS-65 BNc BNc = Bad_Not connected /0
28 OUT_HI_LIM Float 100
29 OUT_LO_LIM Float 0
30 BKCAL_HYS Float 0.5%
31 BKCAL_OUT DS-65 BNs0 BNs0 = Bad-Non Specific 0
32 RCAS_IN DS-65 Bos0 Bos0=Bad-Out of Service/0
33 ROUT_IN DS-65 Bos0 Bos0=Bad-Out of Service/0
34 SHED_OPT Unsigned8 Uninitialized
35 RCAS_OUT DS-65 BNs0 BNs0 = Bad-Non Specific 0
36 ROUT_OUT DS-65 BNs0 BNs0 = Bad-Non Specific 0
37 TRK_SCALE DS-68 0-100%