Flowserve 400MD Logix - Manual (Page 45)

The OUT parameter of the AO block is used to set the FINAL_POSITION_VALUE in the transducer block, as modified by the FINAL_VALUE_
RANGE.
READBACK_OUT tracks the valve position in percent.
Fail-safe Handling
The fail-safe parameters determine the response of an output block to the following conditions. FSTATE_TIME is the number of seconds
without communication or with Initiate Fail Safe at the CAS_IN status, required to put this block into the fail safe state. The FAULT_STATE
parameter of the resource block may also put this block into the fail safe state. The Failsafe Type I/O option determines whether the action is
simply to hold, or to move to FSTATE_VAL.
The Target to Manual if IFS I/O option may be used to latch the fail safe state when IFS appears in the CAS_IN status. This will cause a fail-safe
block alarm. After the cause of the IFS status is removed, the target mode may be returned manually to CAS mode when it is safe to do so
Section 10.17 described how to setup the fail-safe handling.
AO Block Parameter List
Table 8.8 lists the block parameters and default values for the AO function block.
Table 8.9 AO Function Block Parameter List
Index Origin Name Store Date Type Default Value
0 STND ANALOG_OUTPUT_BLOCK SRW Record BLOCK 0
1 STND ST_REV SR Simple UNSIGNED16 0
2 STND TAG_DESC SRW Simple OCTET_STRING “ “
3 STND STRATEGY SRW Simple UNSIGNED16 0
4 STND ALERT_KEY SRW Simple UNSIGNED8 0
5 STND MODE_BLK SRW Record MODE 0x01;0x01;0x79;0x10
6 STND BLOCK_ERR R Simple BIT_STRING 0
7 STND PV R Record FLOAT_S 0;0.0
8 STND SP NRW Record FLOAT_S AO_VAL_SP_STATUS;AO_VAL_SP_VALUE
9 STND OUT NRWO Record FLOAT_S 0x80;0.0
10 STND SIMULATE RW Record SIM_FLOAT 0;0.0;0;0.0;1
11 STND PV_SCALE SRW Record SCALE 100.0;0.0;0;0
12 STND XD_SCALE SRW Record SCALE 100.0;0.0;0;0
13 STND GRANT_DENY RW Record ACCESS_PERM 0;0
14 STND IO_OPTS|IO_OPTS_AO SRW Simple BIT_STRING 0
15 STND STATUS_OPTS|STATUS_OPTS_AO SRW Simple BIT_STRING 0
16 STND READBACK R Record FLOAT_S 0x80;0.0
17 STND CAS_IN NRWI Record FLOAT_S 0xC3;0.0
18 STND SP_RATE_DN SRW Simple FLOATING_POINT FLT_MAX
19 STND SP_RATE_UP SRW Simple FLOATING_POINT FLT_MAX
20 STND SP_HI_LIM SRW Simple FLOATING_POINT 100
21 STND SP_LO_LIM SRW Simple FLOATING_POINT 0
22 STND CHANNEL SRW Simple UNSIGNED16 1
23 STND FSTATE_TIME SRW Simple FLOATING_POINT 0
24 STND FSTATE_VAL SRW Simple FLOATING_POINT 0
25 STND BKCAL_OUT RO Record FLOAT_S 0xcc;0.0
26 STND RCAS_IN NRW Record FLOAT_S 0x1C;0.0
27 STND SHED_OPT SRW Simple UNSIGNED8 0
28 STND RCAS_OUT R Record FLOAT_S 0xcc;0.0
29 STND UPDATE_EVT RW Record ALARM_EVENT 0;0;0,0;0;0;9;0
30 STND BLOCK_ALM RW Record ALARM_DISC 0;0;0,0;0;0;0;8;0;0
31 MFG WSP RW Record FLOAT_S 0,0.0
32 MFG READBACK_OUT RO Record FLOAT_S 0x80;0.0
33 MFG AO_BLOCK_TEST R Array UNSIGNED8 0,0,0,0,0,0,0,0
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
45