red lion PXU - Page 29

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PXU MODBUS REGISTER TABLE 09/04/2015
The following is an example of the necessary query and corresponding response for holding register 2. In this example register 2 is the decimal value 123.
Query: 01 03 00 01 00 01 D5 CA
Response: 01 03 02 00 7B F8 67
Notes:
1. The PXU registers can be read as holding (4x) or input (3x) registers.
2. The PXU should not be powered down while parameters are being changed. Doing so may result in an in-complete write to the non-volatile memory and produce
checksum errors.
REGISTER
(4x)
REGISTER NAME LOW LIMIT HIGH LIMIT
FACTORY
SETTING
ACCESS COMMENTS
FREQUENTLY USED REGISTERS
1 Process Value (PV) N/A N/A N/A Read Only 1 = 1 Display unit
2 Active Setpoint (SP) -999 9999 0 Read/Write 1 = 1 Display unit
3 Setpoint 1 (SP1) -999 9999 0 Read/Write 1 = 1 Display unit
4 Setpoint 2 (SP2) -999 9999 0 Read/Write 1 = 1 Display unit
5 Setpoint Deviation N/A N/A N/A Read Only 1 = 1 Display unit
6 Alarm 1 Value -999 9999 100 Read/Write 1 = 1 Display unit
7 Alarm 2 Value -999 9999 200 Read/Write 1 = 1 Display unit
8 Alarm 3 Value -999 9999 300 Read/Write 1 = 1 Display unit
9 Output Power 1 0 1000 0 Read/Write 1 = 0.1%; writable when in manual mode only.
10 Output Power 2 0 1000 0 Read/Write 1 = 0.1%; writable when in manual mode only.
11 PB Proportional band (Active) 1
999(.9)° or
9999 (process)
70 Read/Write 1 = 1 Display unit
12 Integral time (Active) 0 9999 120 Read/Write 1 = 1 second
13 Derivative time (Active) 0 9999 30 Read/Write 1 = 1 second
14 Integration default (Active) 0 1000 0 Read/Write 1 = 0.1 % output power
15 PID parameter set selection 0 1 0 Read/Write 0 = PID Set 1, 1 = PID Set 2
16 Auto-Tune Start 0 1 0 Read/Write 0 = No; 1 = Yes
17 Control Mode Transfer (Auto/Manual) 0 1 0 Read/Write 0 = Automatic (PID), 1 = User (Manual Mode)
18 Controller Status 0 1 1 Read/Write 0: Stop, 1: Run
19 Setpoint Select 0 1 0 Read/Write 0 = SP1, 1 = SP2
20 SP Ramp Rate 0
999(.9)° or
9999 (process)
0 Read/Write 1 = 1 Display unit/minute; 0 = Ramping disabled
21 LED Status N/A N/A N/A Read Only
Bit State: 0 = Off, 1 = On
b7: AT, b6:OUT1, b5: OUT2, b4: ALM1, b3: °C, b2:
°F, b1: ALM2, b0: ALM3
22 Pushbutton Status N/A N/A N/A Read Only
Bit State: 0 = Key pressed, 1 = Key not pressed
b7: D, b6: Up, b5: F1, b4: N/A, b3: P, b2: Down, b1:
F2, b0: N/A
23 Alarm Reset 0 7 0 Read/Write
Bit State: 1 = reset alarm, bit is returned to zero
following reset
b3: Reset Alm3, b1: Reset Alm2, b0: Reset Alm1
24 Setpoint Ramping Disable 0 1 0 Read/Write 0 = Enabled, 1 = Disabled
25 Integral Action Disable 0 1 0 Read/Write 0 = Enabled, 1 = Disabled
PID PARAMETERS
33 Proportional band 1 1
999(.9)° or
9999 (process)
70 Read/Write 1 = 1 Display unit
34 Integral time 1 0 9999 120 Read/Write 1 = 1 second
35 Derivative time 1 0 9999 30 Read/Write 1 = 1 second
36 Integration default 1 0 1000 0 Read/Write 1 = 0.1 %
37 Proportional band 2 1
999(.9)° or
9999 (process)
70 Read/Write 1 = 1 Display unit
38 Integral time 2 0 9999 120 Read/Write 1 = 1 second
39 Derivative time 2 0 9999 30 Read/Write 1 = 1 second
40 Integration default 2 0 1000 0 Read/Write 1 = 0.1 %
41 Output Power Offset 0 1000 500 Read/Write 1 = 0.1 % output power