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
5.8
LOC Keyboard Lockout ? <sp> LOC <cr> 0 = No lockout
1300 = <sp> LOC <sp> data.2 <cr> 1 = Lock out PID Menu and auto-tune
prompt
2 = Lock out System, PID and Program
Menus
3 = Lock out System, PID and Program
Menus; and set point 1 slewing
Default: 0
LOP Low Power Limit ? <sp> LOP <cr> -100% to HiP (%)
715 = <sp> LOP <sp> data.2 <cr> Default: -100% (heat/cool)
Default: 0% (heat only)
LRNH Learn High Slide- ? <sp> LRNH <cr> 0 = No function
1907 wire Resistance = <sp> LRNH <sp> data.2 <cr> 1 = Learn
Default: 0
LRNL Learn Low Slide- ? <sp> LRNL <cr> 0 = No function
1906 wire Resistance = <sp> LRNL <sp> data.2 <cr> 1 = Learn
Default: 0
MDL Model Number ? <sp> MDL <cr> 982 (981-984 ramping unit)
0
MOD Mode Key Action = <sp> MOD <sp> data.2 <cr> 0 = Mode to previous prompt
1900 1 = Mode to next prompt
MTR Monitor the ? <sp> MTR <cr> See Key Command, "MTR," at the
1200 currently running end of this chapter for full response
step. syntax.
This key command
responds with all
step information for
these step types:
• Set Point (time)
• Set Point (rate)
• Soak
These step types
have zero-time
duration; they will
never respond
to an MTR query:
• Jump-loop
• Link File
• End Step
OT1 Output 1 Action ? <sp> OT1 <cr> 0 = Heat
700 = <sp> OT1 <sp> data.2 <cr> 1 = Cool
OT2 Output 2 Action ? <sp> OT2 <cr> 0 = Heat
717 = <sp> OT2 <sp> data.2 <cr> 1 = Cool
2 = None
3 = Alarm 2
4 = Alarm 2 reverse acting
OT3 Output 3 Action ? <sp> OT3 <cr> 0 = None
734 = <sp> OT3 <sp> data.2 <cr> 1 = Alarm 3
2 = Alarm 3 reverse acting
3 = Event 3 (ENT3)
Table 5.8 -
LOC to OT3
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 pro-
cesses and
equipment.
NOTE:
The number of
decimal places
returned by many
of these com-
mands is deter-
mined by the DEC1
or IN1 setting.
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