Watlow Series 988 Family - Manual (Page 68)

Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Dual Channel Controller Prompt Table
996, 997,
998
, 999
7.10 Data Communications with the Watlow Series 988 Family Command Summary Series 996-999, Chapter 7
RPA Ramping Initiation ? RPA 0 = off
1100 Channel A = RPA data.2 1 = On startup
2 = On startup and set point change
Default: 0
RPB Ramping Initiation ? RPB 0 = off
1104 Channel B = RPB data.2 1 = On startup
2 = On startup and set point change
Default: 0
RTA Ramp Rate ? RTA 0 to 9999°/minute
1101 Channel A = RTA data.2 Default: 100°/minute
RTB Ramp Rate ? RTB 0 to 9999°/minute
1105 Channel B = RTB data.2 Default: 100°/minute
RTD1 RTD Calibration ? RTD1 0 = JIS
609 Curve Input 1 = RTD1 data.2 1 = DIN
Default: 1
RTD2 RTD Calibration ? RTD2 0 = JIS
619 Curve Input 2 = RTD2 data.2 1 = DIN
Default: 1
SIL3 Alarm 3 Silence ? SIL3 0 = off / disabled
739 = SIL3 data.2 1 = on / enabled
Default: 0
SRNB Serial Number ? SRNB xxxx =
2 Bottom Display 0000 to 9999
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 =
1 Top Display 00 to 99
SOFT Software Revision ? SOFT 0 = Rev A 7 = Rev H
4 1 = Rev B 8 = Rev I
2 = Rev C 9 = Rev J
3 = Rev D 10 = Rev K
4 = Rev E 11 = Rev L
5 = Rev F 12 = Rev M
6 = Rev G 13 = Rev N
etc.
SPA Set Point Channel A ? SPA RL1 to RH1
300 = SPA data.2 Default: per IN1 and hardware
SPB Set Point Channel B ? SPB RL2 to RH2
319 = SPB data.2 Default: per IN1 and hardware
SP2A Set Point 2 ? SP2A RL1 to RH1
309 Channel A = SP2A data.2 Default: per input range
Heat/Heat or
Cool/Cool Only
SP2B Set Point 2 ? SP2B RL2 to RH2
328 Channel B = SP2B data.2 Default: per input range
Heat/Heat or
Cool/Cool Only
SYS Lockout System ? SYS 0 = No lockout
1306 Menu = SYS data.2 1 = Read only
2 = No read or write
Default: 0
Table 7.10 -
RPA to SYS
ç
CAUTION:
Avoid writing <=>
continuously,
such as ramping
set points or
repetitive loops, to
the Series 996-999
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, DEC2, IN1
or IN2 setting.
(This does not
apply to Modbus
Protocol.)