User guide
Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Ramping Controller Prompt Table
981, 982,
983, 984
Data Communications with the Watlow Series 988 Family Command Summary Series 981-984, Chapter 5
5.10
PTYP Program Type; ? <sp> PTYP <cr> 0 = Time-based; hour:min:sec
1208 Time-based, or = <sp> PTYP <sp> data.2 <cr> 1 = Ramp rate-based; °/minute
Ramp rate-based Default: 0
PWR Percent Power ? <sp> PWR <cr> -100% to 100%
103 Present Output Default: n/a
RA1 Rate Output 1 ? <sp> RA1 <cr> 0.00 to 9.99 minutes
504 = <sp> RA1 <sp> data.2 <cr> Default: 0.00
RA2 Rate Output 2 ? <sp> RA2 <cr> 0.00 to 9.99 minutes
514 = <sp> RA2 <sp> data.2 <cr> Default: 0.00
RE1 Reset Output 1 ? <sp> RE1 <cr> 0.00 to 9.99 repeats/min.
502 = <sp> RE1 <sp> data.2 <cr> Default: 0.10 repeats/min.
RE2 Reset Output 2 ? <sp> RE2 <cr> 0.00 to 9.99 repeats/min.
512 = <sp> RE2 <sp> data.2 <cr> Default: 0.10 repeats/min.
RESU Resume a Program = <sp> RESU <sp> data.2 <cr> 1 = Resumes current file# and step#
1209
RH1 Range High ? <sp> RH1 <cr> min. IN1 range to max. IN1 range
603 Input 1 = <sp> RH1 <sp> data.2 <cr> Default: sensor high range
RH2 Range High ? <sp> RH2 <cr> min. IN2 range to max. IN2 range
613 Input 2 = <sp> RH2 <sp> data.2 <cr> Default: sensor high range
RHS Run/Hold Status ? <sp> <RHS> <cr> 0 = Hold
200 1 = Run
2 = Pre-run
RL1 Range Low ? <sp> RL1 <cr> min. IN1 range to max. IN1 range
602 Input 1 = <sp> RL1 <sp> data.2 <cr> Default: sensor low range
RL2 Range Low ? <sp> RL2 <cr> min. IN2 range to max. IN2 range
612 Input 2 = <sp> RL2 <sp> data.2 <cr> Default: sensor low range
RTD1 RTD Calibration ? <sp> RTd1 <cr> 0 = JIS
609 Curve Input 1 = <sp> RTd1 <sp> data.2 <cr> 1 = DIN
Default: 1
SIL2 Alarm 2 Silence ? <sp> SIL2 <cr> 0 = off/disabled
722 = <sp> SIL2 <sp> data.2 <cr> 1 = on/enabled
Default: 0
SIL3 Alarm 3 Silence ? <sp> SIL3 <cr> 0 = off/disabled
739 = <sp> SIL3 <sp> data.2 <cr> 1 = on/enabled
Default: 0
SRNB Serial Number ? <sp> SRNB <cr> xxxx =
2 Bottom Display 0000 to 9999
Read the six-digit
unit serial number
in two segments,
SNxx and xxxx,
i.e., upper and lower
front panel displays.
SRNT Serial Number ? <sp> SRNT <cr> SNxx =
1 Top Display 00 to 99
SOFT Software Revision ? <sp> SOFT <cr> 0 = Rev A 8 = Rev I
4 1 = Rev B 9 = Rev J
2 = Rev C 10 = Rev K
3 = Rev D 11 = Rev L
4 = Rev E 12 = Rev M
5 = Rev F 13 = Rev N
6 = Rev G etc..........
7 = Rev H
Table 5.10 -
PTYP to SOFT
ç
CAUTION:
Avoid writing <=>
continuously,
such as ramping
set points or
repetitive loops, to
the Series 981-984
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 com-
mands is deter-
mined by the DEC1
or IN1 setting.
(This does not
apply to Modbus
Protocol.)










