Pax2c frequently used modbus registers – Red Lion PAX2C User Manual
Page 42
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PAX2C FREQUENTLY USED MODBUS REGISTERS
Only frequently used registers are shown below. The entire Modbus Register Table can be found at www.redlion.net and on the included flash drive.
Values less than 65,535 will be in (LO word). Values greater than 65,535 will continue into (Hi word). Negative values are represented by two’s complement of the
combined (Hi word) and (LO word).
Note 1: The PAX2C should not be powered down while parameters are being changed. Doing so may corrupt the non-volatile memory resulting in checksum errors.
REGISTER
ADDRESS
REGISTER NAME
LOW LIMIT
HIGH LIMIT
FACTORY
SETTING
ACCESS
COMMENTS
FREQUENTLY USED REGISTERS
40001
Process Value
N/A
N/A
N/A
Read
1 = 1 Display Unit
40002
Maximum Value
-1999
9999
N/A
Read
1 = 1 Display Unit
40003
Minimum Value
-1999
9999
N/A
Read
1 = 1 Display Unit
40004
Active Setpoint Value
-1999
9999
0
Read/Write 1 = 1 Display Unit
40005
Setpoint 1 Value
-1999
9999
0
Read/Write 1 = 1 Display Unit
40006
Setpoint 2 Value
-1999
9999
0
Read/Write 1 = 1 Display Unit
40007
Setpoint Deviation
N/A
N/A
N/A
Read Only
40008
Output Power
-1000
1000
N/A
Read/Write Output Power: Heat/Cool; * writable only in manual mode; 1 =
0.1%
40009
Active Proportional Band
0
9999
40
Read/Write 1 = 0.1 Display Unit
40010
Active Integral Time
0
65000
120
Read/Write 1 = 1 Display Unit
40011
Active Derivative Time
0
9999
30
Read/Write 1 = 0.1 Display Unit
40012
Active Power Filter
0
600
10
Read/Write 1 = 1 Display Unit
40013
Auto-Tune Code
0
4
2
Read/Write 0 = Very Aggressive, 1 = Aggressive, 2 = Default,
3 = Conservative, 4 = Very Conservative
40014
Auto-Tune Request
0
1
0
Read/Write 0 = Off, 1 = Invoke Auto-Tune
40015
Auto-Tune Phase
0
4
0
Read
0 = Off, 4 = Last Phase of Auto-Tune
40016
Auto-Tune Done
0
1
0
Read
1 = Successful Auto-Tune since last power cycle.
40017
Auto-Tune Fail
0
1
0
Read/Write
40018
Control Mode
0
1
0
Read/Write 0 = Automatic, 1 = Manual Mode
40019
Setpoint Selection
0
1
0
Read/Write 0 = Setpoint 1, 1 = Setpoint 2
40020
Remote/Local Setpoint Selection
0
1
0
Read/Write 0 = Local, 1 = Remote
40021
PID Parameter Selection
0
1
0
Read/Write 0 = Primary PID Values, 1 = Alternate PID Values
40022
Disable Integral Action
0
1
0
Read/Write 0 = Enabled, 1 = Disabled
40023
Disable Setpoint Ramping
0
1
0
Read/Write 0 = Enabled, 1 = Disabled
40024
Setpoint Ramping In Process
0
1
0
Read/Write 0 = Off, 1 = In Process
40025
Setpoint Ramp Rate Value
-1999
9999
0
Read/Write 1 = 1 Display Unit
40026
Alarm (1-16) Status Register
0
65535
0
Read
Bit 15 = A16, Bit 0 = A1
40027
Input Range Alarm
0
1
0
Read
40028
User Input Status
0
2
0
Read
Bit 1 = User Input 2, Bit 0 = User Input 1
40029
Digital Output Status
0
15
N/A
Read/Write
Status of Digital Outputs. Bit State: 0 = Off, 1 = On
Bit 3 = Out1, Bit 2 = Out2, Bit 1 = Out3, Bit 0 = Out4
Outputs can only be activated/reset with this register when the
respective bits in the Manual Mode Register (MMR) are set.
40030
Output Manual Mode Register (MMR)
0
31
0
Read/Write
Bit State: 0 = Auto Mode, 1 = Manual Mode
Bit 4 = DO1, Bit 3 = DO2, Bit 2 = DO3, Bit 1 = DO4,
Bit 0 = Linear Output
40031
Reset Output Register
0
15
0
Read/Write
Bit State: 1 = Reset Output, bit is returned to zero following
reset processing; Bit 3 = DO1, Bit 2 = DO2, Bit 1 = DO3,
Bit 0 = DO4
40032
Analog Output Register (AOR)
0
4095
0
Read/Write
Functional only if Linear Output is in Manual Mode.
(MMR bit 0 = 1)
Linear Output Card written to only if Linear Out (MMR bit 0) is
set.
40033
Active Alarm 1 Value
-1999
9999
0
Read/Write Active List (A or B)
40034
Active Alarm 2 Value
-1999
9999
0
Read/Write Active List (A or B)
40035
Active Alarm 3 Value
-1999
9999
0
Read/Write Active List (A or B)
40036
Active Alarm 4 Value
-1999
9999
0
Read/Write Active List (A or B)
40037
Active Alarm 5 Value
-1999
9999
0
Read/Write Active List (A or B)
40038
Active Alarm 6 Value
-1999
9999
0
Read/Write Active List (A or B)
40039
Active Alarm 7 Value
-1999
9999
0
Read/Write Active List (A or B)
40040
Active Alarm 8 Value
-1999
9999
0
Read/Write Active List (A or B)
40041
Active Alarm 9 Value
-1999
9999
0
Read/Write Active List (A or B)
40042
Active Alarm 10 Value
-1999
9999
0
Read/Write Active List (A or B)
40043
Active Alarm 11 Value
-1999
9999
0
Read/Write Active List (A or B)
40044
Active Alarm 12 Value
-1999
9999
0
Read/Write Active List (A or B)
40045
Active Alarm 13 Value
-1999
9999
0
Read/Write Active List (A or B)
40046
Active Alarm 14 Value
-1999
9999
0
Read/Write Active List (A or B)
40047
Active Alarm 15 Value
-1999
9999
0
Read/Write Active List (A or B)
40048
Active Alarm 16 Value
-1999
9999
0
Read/Write Active List (A or B)
40049
Active Alarm 1 Band/Dev. Value
-1999
9999
0
Read/Write Active List (A or B). Only for Band or Deviation Alarm Action.
40050
Active Alarm 2 Band/Dev. Value
-1999
9999
0
Read/Write Active List (A or B). Only for Band or Deviation Alarm Action.