Watlow Series 988 Family - Manual (Page 47)

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 ? AMB Input 1 terminals in 0.0 ° F
125 Temperature
ANUN Alarm Annunciation ? ANUN 0 = off
106 = ANUN data.2 1 = on
Default: on
AOUT Analog Output 3 ? AOUT 0 = Retransmit Process Output 1
90 Retransmit Function = AOUT data.2 1 = Retransmit Set Point 1
2 = off
3 = Retransmit Process Output 2
Default: 0
ARH Retransmit ? ARH ARL to 9999
93 Range High = ARH data.2 Default: RH1 or RH2 per AOUT
ARL Retransmit ? ARL -999 to ARH
92 Range Low = ARL data.2 Default: RL1 or RL2 per AOUT
ATM Auto-Manual Key ? ATM 0 = Auto mode
10 (Any data.2 toggles = ATM data.2 4 = Manual mode
ATM, like the pressing Default: n/a
the AUTO/MAN key.) Disabled if LOC = 2 or 3
AUT Auto-tune ? AUT 0 = No auto-tuning
19 = AUT data.2 1 = Tune PID Set A
2 = Tune PID Set B
Default: off
ATSP Auto-tune ? ATSP 50 to 150%
109 Set Point % = ATSP data.2 Default: 90%
C1 Input 1 Value ? C1 Based on IN1 range ; RL1 to RH1
1
C2 Input 2 Value ? C2 Based on IN2 range ; RL2 to RH2
2
CAL Lockout ? CAL 0 = No lockout
121 Calibration Menu = CAL data.2 1 = Read only
2 = No read or write
Default: 0
CAL1 Input 1 Calibration ? CAL1 -999 to 9999
51 Offset = CAL1 data.2 Default: 0
CAL2 Input 2 Calibration ? CAL2 -999 to 9999
59 Offset = CAL2 data.2 Default: 0
CF Degrees Select ? CF 0 = Display
°
F
95 Display Loop = CF data.2 1 = Display
°
C
Default = 0
CNTL Control Function ? CNTL 0 = Normal
98 = CNTL data.2 1 = Cascade
2 = Ratio
3 = Differential
Default = 0
COM Lockout Comms ? COM 0 = No lockout
119 Menu = COM data.2 1 = Read only
2 = No read or write
Default: 0
CSAC Cascade Action ? CSAC 0 = direct action
99 = CSAC data.2 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.)