Temperature/process Controller Prompt Table
986, 987,
988
, 989
Data Communications with the Watlow Series 988 Family
6.9
Command Summary Series 986-989, Chapter 6
Name
Description
Read (?) and/or Write (=) Syntax
Range
data.1
data.2
Modbus
address
OT3
Output 3 Action
? <sp> OT3 <cr>
0 = None
78
= <sp> OT3 <sp> data.2 <cr>
1 = Alarm 3
2 = Alarm 3 reverse acting
OTPT
Lockout Output
? <sp> OTPT <cr>
0 = No lockout
117
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
132
1 = SSR 0.5A
OTY2
Output 2 Hardware
? <sp> OTY2 <cr>
2 = SSR 0.5A with suppression
133
6 = Switched dc
OTY3
Output 3 Hardware
? <sp> OTY3 <cr>
8 = Relay 5A Form C
134
9 = Relay 5A Form C with suppr.
OTY4
Output 4 Hardware
? <sp> OTY4 <cr>
10 = Relay 5A Form A/B
135
11 = Relay 5A Form A/B with suppr.
13 = Process output
14 = Voltage retransmit
15 = Current retransmit
16 = Power supply
17 = Comms RS-232
18 = Comms EIA -485 / EIA-422
19 = Comms EIA-485 / RS-232
PB1A
Proportional Band
? <sp> PB1A <cr>
if DFL = 0, then 0 to 9999
21
Output 1 PID Set A
= <sp> PB1A <sp> data.2 <cr>
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, then 0 to 9999
34
Output 1 PID Set B
= <sp> PB1B <sp> data.2 <cr>
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, then 0 to 9999
27
Output 2 PID Set A
= <sp> PB2A <sp> data.2 <cr>
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, then 0 to 9999
40
Output 2 PID Set B
= <sp> PB2B <sp> data.2 <cr>
if DFL = 1, then 0.0 to 99.9% of span
Default: 25
°
F, 14
°
C, 25 units or 3.0%
PIDA
Lockout PID Set A
? <sp> PIDA <cr>
0 = No lockout
114
Menu
= <sp> PIDA <sp> data.2 <cr>
1 = Read only
2 = No read or write
Default: 0
PIDB
Lockout PID Set B
? <sp> PIDB <cr>
0 = No lockout
115
Menu
= <sp> PIDB <sp> data.2 <cr>
1 = Read only
2 = No read or write
Default: 0
Table 6.9 -
OT3 to PIDB
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.
