Watlow Series 988 Family - Manual (Page 65)

Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
996, 997,
998
, 999
Dual Channel Controller Prompt Table
Command Summary Series 996-999, Chapter 7 7.7 Data Communications with the Watlow Series 988 Family
IT1A Integral for Output 1 ? IT1A 0.00 to 99.99 minutes per repeat
501 PID Channel A = IT1A data.2 Default: 0.00 minutes per repeat
IT1B Integral for Output 1 ? IT1B 0.00 to 99.99 minutes per repeat
521 PID Channel B = IT1B data.2 Default: 0.00 minutes per repeat
IT2A Integral for Output 2 ? IT2A 0.00 to 99.99 minutes per repeat
511 PID Channel A = IT2A data.2 Default: 0.00 minutes per repeat
IT2B Integral for Output 2 ? IT2B 0.00 to 99.99 minutes per repeat
531 PID Channel B = IT2B data.2 Default: 0.00 minutes per repeat
ITY1 Input 1 ? ITY1 0 = None
8 Hardware Type 1 = t/c only
4 = Input off
5 = Universal RTD
6 = Universal high gain t/c
7 = Universal low gain t/c
8 = Universal millivolts
9 = Universal process
ITY2 Input 2 ? ITY2 0 = None
9 Hardware Type 1 = t/c only
4 = Input off
5 = Universal RTD
6 = Universal high gain t/c
7 = Universal low gain t/c
8 = Universal millivolts
9 = Universal process
LAT3 Alarm 3 Latching ? LAT3 0 = Latching alarms
738 = LAT3 data.2 1 = Non-latching alarms
Default: 1
LIN2 Linearization ? LIN2 0 = None
618 Process Input 2 = LIN2 data.2 1 = Wet bulb
2 = Vaisala HMM-30C
3 = Rotronic H260
Default: 0
LOC Keyboard Lockout ? LOC 0 = No lockout
1300 = LOC data.2 1 = Lock out mode key
2 = Lock out mode & auto/man keys
3 = Lock out all single keys
Default: 0
MDL Model Number ? MDL 998 (996 - 999 dual channel unit)
0
MOD Mode Key Action = MOD 1 0 = Mode to previous prompt
1900 1 = Mode to next prompt
OT1A Output 1 Channel A ? OT1A 0 = Heat
700 Action = OT1A data.2 1 = Cool
2 = None
OT1B Output 1 Channel B ? OT1B 0 = Heat
717 Action = OT1B data.2 1 = Cool
2 = None
OT2A Output 2 Channel A ? OT2A 0 = Heat
716 Action = OT2A data.2 1 = Cool
2 = None
OT2B Output 2 Channel B ? OT2B 0 = Heat
733 Action = OT2B data.2 1 = Cool
2 = None
OT3 Output 3 Action ? OT3 0 = None
734 = OT3 data.2 1 = Alarm 3
2 = Alarm 3 reverse acting
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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 7.7 -
IT1A to OT3
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.)