Watlow Series 988 Family - Manual (Page 55)

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 ? RL1 min. IN1 range to to max. IN1 range
49 Input 1 = RL1 data.2 Default: Sensor low range
RL2 Range Low ? RL2 min. IN2 range to to max. IN2 range
57 Input 2 = RL2 data.2 Default: Sensor low range
RP Ramping Initiation ? RP 0 = off
110 = RP data.2 1 = on startup
2 = on startup and set point change
Default: 0
RSP Remote Set Point ? RSP 0 = off
142 = RSP data.2 1 = on
Default: 0
RATE Ramp Rate ? RATE 0 to 9999
°
/minute
111 = RATE data.2 Default: 100
°
/minute
RTD1 RTD Calibration ? RTD1 0 = JIS
52 Curve Input 1 = RTD1 data.2 1 = DIN
Default: 1
RTD2 RTD Calibration ? RTD2 0 = JIS
60 Curve Input 2 = RTD2 data.2 1 = DIN
Default: 1
SHYS Slidewire ? SHYS 0 to HUNT
66 Hysteresis = SHYS data.2
SIL2 Alarm 2 Silence ? SIL2 0 = off/disabled
77 = SIL2 data.2 1 = on/enabled
Default: 0
SIL3 Alarm 3 Silence ? SIL3 0 = off/disabled
83 = SIL3 data.2 1 = on/enabled
Default: 0
SRNB Serial Number ? SRNB 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 ? SRNT SNxx = 00 to 99
123 Top Display
SOFT Software Revision ? SOFT 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 ? SP1 RL1 to RH1, or
7 = SP1 data.2 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.
(This does not
apply to Modbus
Protocol.)