User guide

Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
Address
Dual Channel Controller Prompt Table
996, 997,
998, 999
7.8
Data Communications with the Watlow Series 988 Family Command Summary Series 996-999, Chapter 7
OT3S Output 3 Status ? <sp> OT3S <cr> 0 = off
1903 1 = on
OTPT Lockout Output ? <sp> OTPT <cr> 0 = No lockout
1310 Menu = <sp> OTPT <sp> data.2 <cr> 1 = Read only
2 = No read or write
Default: 0
OTY1 Output 1 Hardware ? <sp> OTY1 <cr> 0 = None
16
OTY2 Output 2 Hardware ? <sp> OTY2 <cr> 1 = SSR 0.5A
17
OTY3 Output 3 Hardware ? <sp> OTY3 <cr> 2 = SSR 0.5A with suppression
18
OTY4 Output 4 Hardware ? <sp> OTY4 <cr> 5 = Dual SSR Form A
19 6 = Switched dc
7 = Dual Switched dc
8 = Relay 5A Form C
9 = Relay 5A Form C with suppression
10 = Relay 5A Form A/B
11 = Relay 5A Form A/B with suppres-
sion
12 = Dual Relay Form A
13 = Process output
14 = Voltage retransmit
15 = Current retransmit
16 = Power supply
17 = Comms EIA-232
18 = Comms EIA -485 / EIA 422
19 = Comms EIA -485 / EIA-232
PB1A Proportional Band ? <sp> PB1A <cr> if DFL = 0 and CF = 1, then 0 to 555°C
500 Output 1 PID = <sp> PB1A <sp> data.2 <cr> if DFL = 0 and CF = 0, then 0 to 999°F
Channel A if DFL = 0 and IN1 = a process value,
then 0 to 999 units
if DFL = 1, then 0.0 to 99.9% of span
Default: 25°F, 14°C, 25 units, or 3.0%
PB1B Proportional Band ? <sp> PB1B <cr> if DFL = 0 and CF = 1, then 0 to 555°C
520 Output 1 PID = <sp> PB1B <sp> data.2 <cr> if DFL = 0 and CF = 0, then 0 to 999°F
Channel B if DFL = 0 and IN1 = a process value,
then 0 to 999 units
if DFL = 1, then 0.0 to 99.9% of span
Default: 25°F, 14°C, 25 units, or 3.0%
PB2A Proportional Band ? <sp> PB2A <cr> if DFL = 0 and CF = 1, then 0 to 555°C
510 Output 2 PID = <sp> PB2A <sp> data.2 <cr> if DFL = 0 and CF = 0, then 0 to 999°F
Channel A if DFL = 0 and IN1 = a process value,
then 0 to 999 units
if DFL = 1, then 0.0 to 99.9% of span
Default: 25°F, 14°C, 25 units, or 3.0%
PB2B Proportional Band ? <sp> PB2B <cr> if DFL = 0 and CF = 1, then 0 to 555°C
530 Output 2 PID = <sp> PB2B <sp> data.2 <cr> if DFL = 0 and CF = 0, then 0 to 999°F
Channel B if DFL = 0 and IN1 = a process value,
then 0 to 999 units
if DFL = 1, then 0.0 to 99.9% of span
Default: 25°F, 14°C, 25 units, or 3.0%
Table 7.8 -
OT3S to PB2B
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.)