User guide
Active: Always.1961 rn/a
[```0] to [9999]
(0 to 9999)
[HrS_] Accum Hours
(0 - 9999)
Accumulated system
operating time
(hours).
Active: Always.
Masked if hours <10000
1960 r n/a
[```0] to [9999]
(0 to 9999)
[HrS–] Accum Hours 
(10K - 100M)
Indicates accumulat-
ed system operating
time (hours x 10000).
Active: Always.1591 r n/a
[```0] to [9999]
(0 to 9999)
[HIÇ`] Record High Heat
Sink Temp
Indicates record high
heat sink temp.
Active: Always.57 rn/aFactory set.
[sdÇ`] Factory Safety
Shutdown Temp
Indicates set point
for factory safety
shutdown.
Active: Always.
Same as alarm temp in Setup
Menu.
990 r/w n/a
[```0] to [`sdÇ][ALÇ`] Heat Sink Alarm
Temp
Set the set point for
the heat sink over
temp alarm.
Active: Always.1590 r n/a
[```0] to [9999]
(0 to 9999)
[```Ç] Heat Sink Temp
(°C)
Reads the current
heat sink temp.
Active: Always.54 rn/a
[nOne] none (0)
[```c] comms (1)
[``r~] retransmit (2)
[``rc] comms/retrans-
mit (3)
[`h``] heater diagnos-
tics (4)
[`h`c] heater diagnos-
tics/comms (5)
[`hr`] heater diagnos-
tics/retransmit (6)
[`hrc] heater diagnos-
tics/comms/retrans-
mit 2 (7)
[`OPt] Configuration
Installed Options
Reads the configura-
tion of the hardware
options.
Active: Always.52 rn/a
[```1] single zone (1)
[```2] two zone (2)
[```3] three zone (3)
[2onC] Number Zones
Configured
Reads the number of
zones that are con-
figured.
Active: Always.50 rn/a
[```0] to [`245]
(0 to 245)
[ratA] Unit Current
Rating (Amps)
Reads load current
of the unit.
6.18 ■ Watlow Power Series Parameters, Chapter 6
Display Parameter Range Default Modbus Conditions for 
(Modbus Value) Address Parameters to Appear
read/write










