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
7.3
Data Communications with the Watlow Series 988 Family
ATM
Auto-Manual Key
? <sp> ATM <cr>
0 = Auto Mode Channels A and B
301
= <sp> ATM <sp> data.2 <cr>
1 = Manual Mode Chan. A, Auto Chan. B
2 = Manual Mode Chan. B, Auto Chan. A
3 = Manual Mode Channels A and B
Default: n/a
Disabled if LOC = 2 or 3
ATSP
Auto-tune
? <sp> ATSP <cr>
50 to 150%
304
Set Point %
= <sp> ATSP <sp> data.2 <cr>
Default: 90%
AUT
Auto-tune
? <sp> AUT <cr>
0 = No auto-tuning
305
= <sp> AUT <sp> data.2 <cr>
1 = Tune Channel A PID
2 = Tune Channel B PID
Default: off
C1
Input 1 Value
? <sp> C1 <cr>
Based on IN1 range ; RL1 to RH1
100
C2
Input 2 Value
? <sp> C2 <cr>
Based on IN2 range ; RL2 to RH2
104
CAL
Lockout
? <sp> CAL <cr>
0 = No lockout
1305
Calibration Menu
= <sp> CAL <sp> data.2 <cr>
1 = Read only
2 = No read or write
Default: 0
CAL1
Input 1 Calibration
? <sp> CAL1 <cr>
-999
°
F to 999
°
F
605
Offset
= <sp> CAL1 <sp> data.2 <cr>
-555
°
C to 555
°
C
-999 Units to 999 Units
Default: 0
CAL2
Input 2 Calibration
? <sp> CAL2 <cr>
-999
°
F to 999
°
F
615
Offset
= <sp> CAL2 <sp> data.2 <cr>
-555
°
C to 555
°
C
-999 Units to 999 Units
Default: 0
CF
Degrees Select
? <sp> CF <cr>
0 = Display
°
F
901
Display Loop
= <sp> CF <sp> data.2 <cr>
1 = Display
°
C
Default = 0
COM
Lockout Comms
? <sp> COM <cr>
0 = No lockout
1312
Menu
= <sp> COM <sp> data.2 <cr>
1 = Read only
2 = No read or write
Default: 0
CT1A
Cycle Time
? <sp> CT1A <cr>
S.S. relay or open collector:
506
Output 1 PID
= <sp> CT1A <sp> data.2 <cr>
0.9 = Burst firing, or
Channel A
1.0 to 999.9 sec. (Time prop)
Mech relay: 5.0 to 999.9 sec.
Default: 1.0 or 30.0 sec.
CT1B
Cycle Time
? <sp> CT1B <cr>
S.S. relay or open collector:
526
Output 1 PID
= <sp> CT1B <sp> data.2 <cr>
0.9 = Burst firing, or
Channel B
1.0 to 999.9 sec. (Time prop)
Mech relay: 5.0 to 999.9 sec.
Default: 1.0 or 30.0 sec.
CT2A
Cycle Time
? <sp> CT2A <cr>
S.S. relay or open collector:
516
Output 2 PID
= <sp> CT2A <sp> data.2 <cr>
0.9 = Burst firing, or
Channel A
1.0 to 999.9 sec. (Time prop)
Mech relay: 5.0 to 999.9 sec.
Default: 1.0 or 30.0 sec.
CT2B
Cycle Time
? <sp> CT2B <cr>
S.S. relay or open collector:
536
Output 2 PID
= <sp> CT2B <sp> data.2 <cr>
0.9 = Burst firing, or
Channel B
1.0 to 999.9 sec. (Time prop)
Mech relay: 5.0 to 999.9 sec.
Default: 1.0 or 30.0 sec.
DATE
Factory
? <sp> DATE <cr>
xxyy
5
Test Date
xx = Week
yy = Year
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 7.3 -
ATM to DATE
NOTE:
The number of
decimal places
returned by many
of these com-
mands is deter-
mined by the
DEC1, DEC2, IN1
or IN2 setting.
