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
7.4
Data Communications with the Watlow Series 988 Family Command Summary Series 996-999, Chapter 7
DBA Deadband ? <sp> DBA <cr> -999°F to 999°F
505 PID Channel A = <sp> DBA <sp> data.2 <cr> -555°C to 555°C
-999 units to 999 units
Default: 0°F, 0°C, or 0 units
DBB Deadband ? <sp> DBB <cr> -999°F to 999°F
525 PID Channel B = <sp> DBB <sp> data.2 <cr> -555°C to 555°C
-999 units to 999 units
Default: 0°F, 0°C, or 0 units
DE1A Derivative ? <sp> DE1A <cr> 0.00 to 9.99 minutes
503 Output 1 PID = <sp> DE1A <sp> data.2 <cr> Default: 0.00
Channel A
DE1B Derivative ? <sp> DE1B <cr> 0.00 to 9.99 minutes
523 Output 1 PID = <sp> DE1B <sp> data.2 <cr> Default: 0.00
Channel B
DE2A Derivative ? <sp> DE2A <cr> 0.00 to 9.99 minutes
513 Output 2 PID = <sp> DE2A <sp> data.2 <cr> Default: 0.00
Channel A
DE2B Derivative ? <sp> DE2B <cr> 0.00 to 9.99 minutes
533 Output 2 PID = <sp> DE2B <sp> data.2 <cr> Default: 0.00
Channel B
DEC1 Decimal Point ? <sp> DEC1 <cr> 0 = Decimal point 0
606 Process Input 1 = <sp> DEC1 <sp> data.2 <cr> 1 = Decimal point 0.0
2 = Decimal point 0.00
3 = Decimal point 0.000
Default: 0
DEC2 Decimal Point ? <sp> DEC2 <cr> 0 = Decimal point 0
616 Process Input 2 = <sp> DEC2 <sp> data.2 <cr> 1 = Decimal point 0.0
2 = Decimal point 0.00
3 = Decimal point 0.000
Default: 0
DFL Default Unit Type ? <sp> DFL <cr> 0 = US units
900 = <sp> DFL <sp> data.2 <cr> 1 = Standard International units
Default: 0
DIAG Lockout ? <sp> DIAG <cr> 0 = No lockout
1313 Diagnostics Menu = <sp> DIAG <sp> data.2 <cr> 1 = Read only
2 = No read or write
Default: 0
EI1 Event Input 1 ? <sp> EI1 <cr> 0 = No
1060 Function = <sp> EI1 <sp> data.2 <cr> 1 = LOC
2 = Alarm reset
3 = Toggle Auto/manual
4 = Turn control outputs off
Default: No
EI1S Event Input 1 Status ? <sp> EI1S <cr> 0 = off (open)
201 1 = on (closed)
ER Error, Analog Input ? <sp> ER <cr> 0 = No error
209 (Multiple errors 1 = Input 1 A-D overflow
possible.) 2 = Input 1 overrange
3 = Input 1 underrange
4 = Input 1 A-D underflow
5 = Input 2 A-D overflow
6 = Input 2 overrange
7 = Input 2 underrange
8 = Input 2 A-D underflow
9 = Ambient error
Table 7.4 -
DBA to ER
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.)`