Temperature/process Controller Prompt Table
986, 987,
988, 989
Data Communications with the Watlow Series 988 Family
6.7
Command Summary Series 986-989, Chapter 6
Name Description Read (?) and/or Write (=) Syntax Range
data.1 data.2
Modbus
address
IN2 Input 2 Type ? <sp> IN2 <cr> 0 = t/c Low Gain off
55 = <sp> IN2 <sp> data.2 <cr> 1 = J t/c; 32 to 1500°F/0 to 816°C
2 = K t/c; -328 to 2500°F/-200 to 1371°C
(Caution: Writing to 3 = T t/c; -328 to 750°F/-200 to 399°C
IN2 resets most 4 = N t/c; 32 to 2372°F/0 to 1300°C
prompts to their de- 5 = E t/c; -328 to 1470°F/-200 to 799°C
fault state.) 6 = C t/c (W3); 32 to 4200°F 0 to 2316°C
7 = D t/c (W5); 32 to 4200°F/0 to 2316°C
8 = Pt 2; 32 to 2543°F/0 to 1395°C
9 = t/c High Gain off
10 = R t/c; 32 to 3200°F/0 to 1760°C
11 = S t/c; 32 to 3200°F/0 to 1760°C
12 = B t/c; 1598 to 3300°F/870 to 1816°C
13 = RTD off
14 = 1° RTD (JIS); -328 to 1166°F/
-200 to 630°C, or
14 = 1° RTD (DIN); -328 to 1472°F/
-200 to 800°C
15 = 0.1° RTD; -99.9 to 999.9°F/
-99.9 to 700.0°C
16 = Process off
17 = 4-20mA; -999 to 9999 units
18 = 0-20mA; -999 to 9999 units
19 = 0-5VÎ (dc); -999 to 9999 units
20 = 1-5VÎ (dc); -999 to 9999 units
21 = 0-10VÎ (dc); -999 to 9999 units
22 = Millivolts off
23 = 0-50mVÎ (dc); -999 to 9999 units
24 = 0-100mVÎ (dc); -999 to 9999 units
26 = Resistance off
27 = Slidewire; 100 to 1200Ω
28 = Potentiometer; 0 to 1200Ω
29 = Heater current off
30 = Heater Current; 0 to 50A
31 = Open loop detect
32 = Event input 2 off
33 = Event input 2 on
INPT Lockout Input Menu ? <sp> INPT <cr> 0 = No input menu lockout
116 = <sp> INPT <sp> data.2 <cr> 1 = Read only
2 = No read or write allowed
Default: 0
IT1A Integral for Output 1 ? <sp> IT1A <cr> 0.00 to 99.99 minutes per repeat
24 PID Set A = <sp> IT1A <sp> data.2 <cr> Default: 0.00 minutes per repeat
IT2A Integral for Output 2 ? <sp> IT2A <cr> 0.00 to 99.99 minutes per repeat
30 PID Set A = <sp> IT2A <sp> data.2 <cr> Default: 0.00 minutes per repeat
IT1B Integral for Output 1 ? <sp> IT1B <cr> 0.00 to 99.99 minutes per repeat
37 PID Set B = <sp> IT1B <sp> data.2 <cr> Default: 0.00 minutes per repeat
IT2B Integral for Output 2 ? <sp> IT2B <cr> 0.00 to 99.99 minutes per repeat
43 PID Set B = <sp> IT2B <sp> data.2 <cr> Default: 0.00 minutes per repeat
INSP Cascade ? <sp> INSP <cr> RL1 to RH1, or
144 Inner SP if CNTL = 2 (ratio), then 0.0 to 20.0
if CNTL = 3 (differential), then -999 to 999
if ATM = 1, then 0 to 100%
Default: per IN1 and hardware
ITY1 Input 1 ? <sp> ITY1 <cr> 0 = None
130 Hardware Type 1 = t/c only
2 = Current
3 = Slide wire
4 = Input off
5 = Universal RTD
6 = Universal high gain t/c
7 = Universal low gain t/c
8 = Universal millivolts
9 = Universal process
Table 6.7 -
IN2 to ITY1
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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.
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