Temperature/process Controller Prompt Table
986, 987,
988
, 989
Data Communications with the Watlow Series 988 Family
6.11
Command Summary Series 986-989, Chapter 6
Name
Description
Read (?) and/or Write (=) Syntax
Range
data.1
data.2
Modbus
address
RL1
Range Low
? <sp> RL1 <cr>
min. IN1 range to to max. IN1 range
49
Input 1
= <sp> RL1 <sp> data.2 <cr>
Default: Sensor low range
RL2
Range Low
? <sp> RL2 <cr>
min. IN2 range to to max. IN2 range
57
Input 2
= <sp> RL2 <sp> data.2 <cr>
Default: Sensor low range
RP
Ramping Initiation
? <sp> RP <cr>
0 = off
110
= <sp> RP <sp> data.2 <cr>
1 = on startup
2 = on startup and set point change
Default: 0
RSP
Remote Set Point
? <sp> RSP <cr>
0 = off
142
= <sp> RSP <sp> data.2 <cr>
1 = on
Default: 0
RATE
Ramp Rate
? <sp> RATE <cr>
0 to 9999
°
/minute
111
= <sp> RATE <sp> data.2 <cr>
Default: 100
°
/minute
RTD1
RTD Calibration
? <sp> RTD1 <cr>
0 = JIS
52
Curve Input 1
= <sp> RTD1 <sp> data.2 <cr>
1 = DIN
Default: 1
RTD2
RTD Calibration
? <sp> RTD2 <cr>
0 = JIS
60
Curve Input 2
= <sp> RTD2 <sp> data.2 <cr>
1 = DIN
Default: 1
SHYS
Slidewire
? <sp> SHYS <cr>
0 to HUNT
66
Hysteresis
= <sp> SHYS <sp> data.2 <cr>
SIL2
Alarm 2 Silence
? <sp> SIL2 <cr>
0 = off/disabled
77
= <sp> SIL2 <sp> data.2 <cr>
1 = on/enabled
Default: 0
SIL3
Alarm 3 Silence
? <sp> SIL3 <cr>
0 = off/disabled
83
= <sp> SIL3 <sp> data.2 <cr>
1 = on/enabled
Default: 0
SRNB Serial Number
? <sp> SRNB <cr>
xxxx = 0000 to 9999
124
Bottom Display
Read the six-digit unit
serial number in two
segments,
"SNxx" and "xxxx,"
i.e., as in the
upper and lower
front panel displays.
SRNT
Serial Number
? <sp> SRNT <cr>
SNxx = 00 to 99
123
Top Display
SOFT
Software Revision
? <sp> SOFT <cr>
0 = Rev A
7 = Rev H
14 = Rev O
141
1 = Rev B
8 = Rev I
15 = Rev P
2 = Rev C
9 = Rev J
16 = Rev Q
3 = Rev D
10 = Rev K
17 = Rev R
4 = Rev E
11 = Rev L
18 = Rev S
5 = Rev F
12 = Rev M
19 = Rev T
6 = Rev G
13 = Rev N
20 = Rev U
etc.
SP1
Set Point 1
? <sp> SP1 <cr>
RL1 to RH1, or
7
= <sp> SP1 <sp> data.2 <cr>
if CNTL = 2 (ratio), then 0.0 to 20.0
if CNTL = 3 (differential), then -999 to 999
if ATM = 1, then 0 to 100%
Default: per IN1 and hardware
Table 6.11 -
RL1 to SP1
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.
