User guide

Temperature/process Controller Prompt Table
986, 987,
988, 989
Data Communications with the Watlow Series 988 Family
6.3
Command Summary Series 986-989, Chapter 6
Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
address
AMB Ambient Terminal ? <sp> AMB <cr> Input 1 terminals in 0.0°F
125 Temperature
ANUN Alarm Annunciation ? <sp> ANUN <cr> 0 = off
106 = <sp> ANUN <sp> data.2 <cr> 1 = on
Default: on
AOUT Analog Output 3 ? <sp> AOUT <cr> 0 = Retransmit Process Output 1
90 Retransmit Function = <sp> AOUT <sp> data.2 <cr> 1 = Retransmit Set Point 1
2 = off
3 = Retransmit Process Output 2
Default: 0
ARH Retransmit ? <sp> ARH <cr> ARL to 9999
93 Range High = <sp> ARH <sp> data.2 <cr> Default: RH1 or RH2 per AOUT
ARL Retransmit ? <sp> ARL <cr> -999 to ARH
92 Range Low = <sp> ARL <sp> data.2 <cr> Default: RL1 or RL2 per AOUT
ATM Auto-Manual Key ? <sp> ATM <cr> 0 = Auto mode
10 (Any data.2 toggles = <sp> ATM <sp> data.2 <cr> 4 = Manual mode
ATM, like the pressing Default: n/a
the AUTO/MAN key.) Disabled if LOC = 2 or 3
AUT Auto-tune ? <sp> AUT <cr> 0 = No auto-tuning
19 = <sp> AUT <sp> data.2 <cr> 1 = Tune PID Set A
2 = Tune PID Set B
Default: off
ATSP Auto-tune ? <sp> ATSP <cr> 50 to 150%
109 Set Point % = <sp> ATSP <sp> data.2 <cr> Default: 90%
C1 Input 1 Value ? <sp> C1 <cr> Based on IN1 range ; RL1 to RH1
1
C2 Input 2 Value ? <sp> C2 <cr> Based on IN2 range ; RL2 to RH2
2
CAL Lockout ? <sp> CAL <cr> 0 = No lockout
121 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 to 9999
51 Offset = <sp> CAL1 <sp> data.2 <cr> Default: 0
CAL2 Input 2 Calibration ? <sp> CAL2 <cr> -999 to 9999
59 Offset = <sp> CAL2 <sp> data.2 <cr> Default: 0
CF Degrees Select ? <sp> CF <cr> 0 = Display °F
95 Display Loop = <sp> CF <sp> data.2 <cr> 1 = Display °C
Default = 0
CNTL Control Function ? <sp> CNTL <cr> 0 = Normal
98 = <sp> CNTL <sp> data.2 <cr> 1 = Cascade
2 = Ratio
3 = Differential
Default = 0
COM Lockout Comms ? <sp> COM <cr> 0 = No lockout
119 Menu = <sp> COM <sp> data.2 <cr> 1 = Read only
2 = No read or write
Default: 0
CSAC Cascade Action ? <sp> CSAC <cr> 0 = direct action
99 = <sp> CSAC <sp> data.2 <cr> 1 = reverse action
Table 6.3 -
AMB to CSAC
ç
CAUTION:
Avoid writing <=>
continuously,
such as ramping
set points or
repetitive loops, to
the Series 986-989
EEPROM memory.
Continuous writes
may result in
premature control
failure, system
downtime and
damage to
processes and
equipment.
NOTE:
The number of
decimal places
returned by many
of these
commands is
determined by the
DEC1, DEC2, IN1
or IN2 setting.
(This does not
apply to Modbus
Protocol.)