PACSystems RX3i - Parameters Sent to PSM Module

User Manual Chapter 3
GFK-2749A Jan 2020
Configuration and Data Transfer 54
Relay Open/Relay Close Operation
The Relay Open/Relay Close bits (%Q16 / %Q32) control the PSM’s Sync controller function.
The PSM can close the Sync contacts only if no ANSI alarm has been detected. The PSM
opens the Sync contacts immediately (i.e. without waiting for the PLC to issue the 1-0-bit
combination) if any of the ANSI alarms has been detected. It is recommended that after a
successful Sync relay connection, the PLC sets those two bits to either a 0-0 or 1-1 (no
action) state. Then, after a sync relay disconnection unintentional (e.g. due to some ANSI
alarm) the PSM will not be able to close the Sync contacts without PLC intervention.
Relay Open (%Q16)
Relay Close (%Q32)
PSM Action
0
0
No action
0
1
Closes Sync contacts
1
0
Opens Sync contacts
1
1
No action
3.2.3 Parameters sent to PSM Module
Many of the configuration parameters can be modified by the application logic during
runtime. These parameters are set initially when the hardware configuration is downloaded
but can be modified during runtime to adjust to changing conditions.
Parameters are changed using two Word Parameter Write registers in %AQ memory. The
first word contains the parameter index number and the second word contains the
parameter value. One parameter can be changed per RX3i controller scan. Both %AQ
locations should be set to a value of 0 when parameter values are not being changed.
It is recommended that the %AQ Word 2 be set to the desired value first, followed by the
%AQ Word 1 being set to the index for at least one PLC scan. Then the %AQ Word 1 should
be set to zero, followed by the %AQ Word being set to zero.
Index
(%AQ
Word 1)
Parameter Value
(%AQ Word 2)
Default value
Value Limits
1
GRID 1 MODULE OFFSET
0
Calibrated value, -1000 to +1000
2
GRID 1 MODULE GAIN
0x4000
Calibrated value, 0h to FFFFh
3
GRID 1 VA1 GAIN LOW
0x4000
Calibrated value, 0h to FFFFh
4
GRID 1 VA1 GAIN HIGH
0x4000
Calibrated value, 0h to FFFFh
5
GRID 1 IA1GAIN
0x4000
Calibrated value, 0h to FFFFh
6
GRID 1 VB1 GAIN LOW
0x4000
Calibrated value, 0h to FFFFh
7
GRID 1 VB1 GAIN HIGH
0x4000
Calibrated value, 0h to FFFFh
8
GRID 1 IB1 GAIN
0x4000
Calibrated value, 0h to FFFFh
9
GRID 1 VC1 GAIN LOW
0x4000
Calibrated value, 0h to FFFFh
10
GRID 1 VC1 GAIN HIGH
0x4000
Calibrated value, 0h to FFFFh
11
GRID 1 IC1 GAIN
0x4000
Calibrated value, 0h to FFFFh
12
GRID 1 IN1 GAIN
0x4000
Calibrated value, 0h to FFFFh