Register Identification Table
Register
ID
Register
(Parameter)
Applicable
Command
Abbreviation
(Mnemonic)
Numeric Data
Range
Engineering
Units
A Input T T48: TMP
P48: INP
-999 to 9999 T48: F or C
P48: Blank
B Setpoint T, V SET -999 to 9999 T48: F or C
P48: Blank
C Output
power
T, V (manual
mode only)
PWR -99.9 to 100.0 %
D Proportional T, V PBD 0.0 to 999.9 %
E Integral T, V INT 0 to 9999 S
F Derivative T, V DER 0 to 9999 S
G Alarm 1 T, V, R AL1 -999 to 9999 T48: F or C
P48: Blank
H Alarm 2 T, V, R AL2 -999 to 9999 T48: F or C
P48: Blank
I Deviation T DEV -999 to 9999 T48: F or C
P48: Blank
J Power Offset T, V (auto
mode only)
OFP -99.9 to 999.9 T48: F or C
P48: Blank
K Setpoint
Ramp
T, V RMP 0 to 9999 R
L Cooling Gain T, V CRG 0.0 to 10.0 G
M Cooling
Offset
T, V CDB -999 to 9999 T48: F or C
P48: Blank
BB Remote
Setpoint
T RSP -999 to 9999 T48: F or C
P48: Blank
HC Heater
Current
T HCF or HCN 0.0 to 999.9 A
SAuto/
Manual
C —- 1 (Auto),
2 (Manual)
Blank
T Auto-tune C —- 1 (Start),
2 (Stop)
Blank
U Local /
Remote
C —- 1 (Local),
2(Remote)
Blank
W Output
Status
T OST 0000 to 1111 Blank
Terminator Table
Character Description Comments
* Command Terminator Slow response (100 to 200 msec)
setpoint saved to E
2
PROM
$ Command Terminator Fast response (2 to 100 msec)
setpoint not saved to E
2
PROM
Examples of Command Strings:
Example: Write 10.0 to Setpoint register with a controller address of 2.
Command String: N2VB100*
Explanation: Address = 2, Command =V, Register ID = B, Numeric Data =
100, Terminator = * (with $ setpoint will not be saved to E
2
PROM)
Example: Read input register of controller with an address of 3.
Command String: N3TA*
Explanation: Address = 3, Command =T, Register ID = A, Terminator = *
Example: Reset Alarm Output 1 of controller with an address of 0.
Command String: RG*
Explanation: Address = not used for address 0, Command =R, Register ID
=G,Terminator=*
Example: Write to Auto-Tune control register (start Auto-Tune) on
controller with an address of 5.
Command String: N05CT1$
Explanation: Address = 5, Command = C, Register ID = T, Numeric Data =
1 (start), Terminator = $
Command Code Explanations
Controller (Node) Address: N
When more than one controller is on the serial communication bus, a
unique controller (node) address must be assigned to each unit. The address
range extends from 0 to 99. This is defined in the controller configurations.
To communicate with a specific controller, the address code N followed by
the controller’s address value must start a command string. A controller with
an address of 0 does not require the node address command. Controllers with
an address greater than 0 will respond to transmit commands by sending their
address followed by the requested data.
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