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Model 4688-IR / Model 4679-IR
Operation & Maintenance Manual
Manual #087-0007G, 10/2003
Appendix 2
(FSR) Command Functions
Command functions are required whenever a value is to be
written
to the instrument. All command values are direct to the Function
Select Register (FSR), located in address 40001. The FSR register
recognizes 11 commands:
Command (1): W
Command (1): W
Command (1): W
Command (1): W
Command (1): Write 8-Bit byte parameter
rite 8-Bit byte parameter
rite 8-Bit byte parameter
rite 8-Bit byte parameter
rite 8-Bit byte parameter
Validates and writes 8-bit byte parameters into nonvolatile parameter memory.
Updates the RFF bit in the STS register.
Sequence: CDR1={new value}, PSR={parameter#}, FSR=1
Command (2): W
Command (2): W
Command (2): W
Command (2): W
Command (2): Write 16-Bit integer parameter
rite 16-Bit integer parameter
rite 16-Bit integer parameter
rite 16-Bit integer parameter
rite 16-Bit integer parameter
Validates and writes 16-bit integer parameters into nonvolatile parameter
memory. Updates the RFF bit in the STS register.
Sequence: IDR1={new value}, PSR={parameter#}, FSR=2
Command (4): W
Command (4): W
Command (4): W
Command (4): W
Command (4): Write 32-Bit real parameter
rite 32-Bit real parameter
rite 32-Bit real parameter
rite 32-Bit real parameter
rite 32-Bit real parameter
Validates and writes 32-bit real parameters into nonvolatile parameter
memory. Updates the RFF bit in the STS register.
Sequence: RDR1={new value}, PSR={parameter#}, FSR=4
Command (10): Alarm T
Command (10): Alarm T
Command (10): Alarm T
Command (10): Alarm T
Command (10): Alarm Test Override
est Override
est Override
est Override
est Override
Turns on the alarm override mode and forces alarms to a specified state.
Note that the alarm relays programmed as FAIL-SAFE will be energized when
the alarm is OFF, and de-energized when the alarm is ON. Alarm override
mode is disabled by using command function 11 (Reset Alarms). This
command does not affect the RFF bit in the STS register.
Register sequence (for forcing on/off more than one alarm at a time):
1. CDR1={0-7 [ see table below]}
2. PSR=not used
3. FSR=10
Coil sequence (for forcing on/off one alarm only)
1. CDR1B0 (or CDR1B1, CDR1B2)={0-7 [ see table below]}
2. PSR=not used
3. FSR=10
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