Watlow Series 988 Family - Manual (Page 31)

Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Ramping Controller Prompt Table 981,
982,
983, 984
Command Summary Series 981-984, Chapter 5 Data Communications with the Watlow Series 988 Family 5.3
Command Summary Series 981-984 Data Communications
Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
A2HI Output 2 Alarm High ? A2HI Process: A2LO to sensor high range
322 = A2HI data.2 Deviation: 0 to 9999°
Rate: 0 to 9999°/minute
Default: RH, 999°, or 999°/min.
A2LO Output 2 Alarm Low ? A2LO Process: sensor low range to A2HI
321 = A2LO data.2 Deviation: -999 to 0°
Rate: -999 to 0°/minute
Default: RL, -999°, or -999°/min.
A3HI Output 3 Alarm High ? A3HI Process: A3LO to sensor high range
341 = A3HI data.2 Deviation: 0 to 9999°
Rate: 0 to 9999°/minute
Default: RH, 999°, or 999°/min.
A3LO Output 3 Alarm Low ? A3LO Process: sensor low range to A3HI
340 = A3LO data.2 Deviation: -999 to 0°
Rate: -999 to 0°/minute
Default: RL, -999°, or -999°/min.
ABSP Abort Set Point ? ABSP off
1211 = ABSP data.2 RL to RH
ACAL Calibration Offset for ? ACAL -999°F to 999°F
746 Retransmit Output = ACAL data.2 -555°C to 555°C
999 to 999 units
Default: 0°F, 0°C, or 0 units
AL2 Alarm 2 Type ? AL2 0 = Process Alarm, Input 1
719 = AL2 data.2 1 = Deviation Alarm, Input 1
2 = Rate Alarm, Input 1
Default: 0
AL3 Alarm 3 Type ? AL3 0 = Process Alarm, Input 1
736 = AL3 data.2 1 = Deviation Alarm, Input 1
2 = Rate Alarm, Input 1
Default: 0
ALM Alarm Status ? ALM 0 = No alarms occurring (0000 0000)
106 (Writing a 0 clears = ALM 0 Bit 1 = A2LO (0000 0001)
or next alarm.) Bit 2 = A2HI (0000 0010)
110 Bit 3 = A3LO (0000 0100)
Bit 4 = A3HI (0000 1000)
106 = Alarm 2
0 = off
1 = HI
2 = LO
110 = Alarm 3
0 = off
1 = HI
2 = LO
AMB Ambient Terminal ? AMB Input 1 terminals in 0.0°F
1500 Temperature
Table 5.3 -
A2HI to AMB
ç
CAUTION:
Avoid writing <=>
continuously, such
as ramping set
points or repetitive
loops, to the
Series 981-984
EEPROM memory.
Continuous writes
may result in
premature control
failure, system
downtime and
damage to pro-
cesses and
equipment.
NOTE:
The number of
decimal places
returned by many
of these com-
mands is deter-
mined by the DEC1
or IN1 setting.
(This does not
apply to Modbus
Protocol.)