User guide

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
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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 7.3 -
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.
(This does not
apply to Modbus
Protocol.)