Watlow Series 988 Family - Manual (Page 60)

Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Dual Channel Controller Prompt Table
996, 997,
998
, 999
7.2 Data Communications with the Watlow Series 988 Family Command Summary Series 996-999, Chapter 7
A3HI Output 3 Alarm High ? <sp> A3HI<cr> Process: A3LO to sensor high range
341 = <sp> A3HI <sp> data.2 <cr> Deviation: 0 to 9999°
Default: RH or 999°
A3LO Output 3 Alarm Low ? <sp> A3LO <cr> Process: sensor low range to A3HI
340 = <sp> A3LO <sp> data.2 <cr> Deviation: -999 to 0°
Default: RL or -999°
ACAL Analog Offset ? <sp> ACAL <cr> -999 to 999°F
746 = <sp> ACAL <sp> data.2 <cr> -555 to 555°C
-999 to 999 units
Default: 0°F, 0°C, 0 units
AL3 Alarm 3 Type ? <sp> AL3 <cr> 0 = Process Alarm, Input 2 (CH B)
736 = <sp> AL3 <sp> data.2 <cr> 1 = Deviation Alarm, Input 2 (CH B)
2 = Process Alarm, Input 1 (CH A)
3 = Deviation Alarm, Input 1 (CH A)
Default: 2
ALM Alarm Status ? <sp> ALM <cr> 0 = No alarms occurring (0000 0000)
110 (Writing a 0 clears = <sp> ALM <sp> 0 <cr> Bit 3 = A3LO (0000 0100)
next alarm.) Bit 4 = A3HI (0000 1000)
110 = Alarm 3
0 = off
1 = HI
2 = LO
ALT Altitude ? <sp> ALT <cr> 0 = 0
1902 Compensation = <sp> ALT <sp> data.2 <cr> 1 = 2500 feet
2 = 5000 feet
default: 0
AMB Ambient Terminal ? <sp> AMB <cr> Input 1 terminals in 0.0°F
1500 Temperature
ANUN Alarm Annunciation ? <sp> ANUN <cr> 0 = off
742 = <sp> ANUN <sp> data.2 <cr> 1 = on
Default: on
AOUT Analog Output 3 ? <sp> AOUT <cr> 0 = Retransmit Process Channel A
743 Retransmit Function = <sp> AOUT <sp> data.2 <cr> 1 = Retransmit Set Point Channel A
2 = off
3 = Retransmit Process Channel B
4 = Retransmit Set Point Channel B
Default: 0
ARH Retransmit ? <sp> ARH <cr> ARL to 9999
745 Range High = <sp> ARH <sp> data.2 <cr> Default: RH1 or RH2 per AOUT
ARL Retransmit ? <sp> ARL <cr> -999 to ARH
744 Range Low = <sp> ARL <sp> data.2 <cr> Default: RL1 or RL2 per AOUT
ç
CAUTION:
Avoid writing <=>
continuously,
such as ramping
set points or
repetitive loops, to
the Series 996-999
EEPROM memory.
Continuous writes
may result in
premature control
failure, system
downtime and
damage to
processes and
equipment.
Table 7.2 -
A3HI to ARL
NOTE:
The number of
decimal places
returned by many
of these com-
mands is deter-
mined by the
DEC1, DEC2, IN1
or IN2 setting.
(This does not
apply to Modbus
Protocol.)
Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Command Summary Series 996-999 Data Communications