Pin Name Description
11 2A. DLatch 2A
Input A (+) connection for second external DC latching solenoid. Use I/O board Modbus register
508 to control.
12 2B. DLatch 2B Input B (-) connection for second external DC latching solenoid
13 S-. Secondary RS-485 -
Modbus Slave RS-485 (+) connection for host system as a Modbus master communicating to the
DXM controller as a Modbus Slave device.
14 S+. Secondary RS-485 + Modbus Slave RS-485 (-) connection.
15 SP. SDI-12 Courtesy Power Power connection for external SDI-12 sensors
16 SD. SDI-12 Data Communications line for external SDI-12 sensors
17 GD. Ground Ground connection for SDI-12 sensor (DXM common ground)
18 P3. Courtesy Power 5 V Courtesy Power output 5 V, limited to 500 mA
19 A2. Analog OUT 2 (0–10 V)
Analog output 2, (0-10 V) controlled by I/O board Modbus register 508. (values range from
0-10000)
20 A1. Analog OUT 1 (0–10 V)
Analog output 1, (0-10 V) controlled by I/O board Modbus register 507. (values range from
0-10000)
21 P2. Adjustable Courtesy Power (5–24 V)
Adjustable power output 2, 5–24 V DC. Use DXM Configuration Software to set voltage output
and associating power output to input pins.
22 N4. NMOS OUT 4 NMOS switch to ground controlled by I/O Modbus registers 504; 1A maximum at 30 V DC.
23 N3. NMOS OUT 3 NMOS switch to ground controlled by I/O Modbus registers 503; 1A maximum at 30 V DC.
24 N2. NMOS OUT 2 NMOS switch to ground controlled by I/O Modbus registers 502; 1A maximum at 30 V DC.
25 N1. NMOS OUT 1 NMOS switch to ground controlled by I/O Modbus registers 501; 1A maximum @ 30VDC.
26 GD. Ground DXM ground
27 U4. Universal Input 4
Universal input #4, NPN, PNP, 0–20 mA, 0–10 V, 10k Thermistor. Use DXM Configuration
Software or Modbus registers to set input type. I/O Modbus register 4
28 U3. Universal Input 3
Universal input #3, NPN, PNP, 0–20 mA, 0–10 V, 10k Thermistor. Use DXM Configuration
Software or Modbus registers to set input type. I/O Modbus register 3
29 GD. Ground DXM ground
30 P1. Adjustable Courtesy Power (5–24 V)
Adjustable power output 1, 5–24 V DC. Use DXM Configuration Software to set voltage output
and associating power output to input pins.
31 U2. Universal Input 2
Universal input #2, NPN, PNP, 0–20 mA, 0–10 V, 10k Thermistor. Use DXM Configuration
Software or Modbus registers to set input type. I/O Modbus register 2
32 U1. Universal Input 1
Universal input #1, NPN, PNP, 0–20 mA, 0–10 V, 10k Thermistor. Use DXM Configuration
Software or Modbus registers to set input type. I/O Modbus register 1
A Base board LED J Modbus Slave ID DIP Switches
B A1. Cellular or secondary antenna K Modbus Slave ID DIP Switches
C Radio LED G Programming header L Processor Board Connection
D A2. ISM Antenna H
ISM Radio Board Connection (A2
model only)
M Display Connection
DXM Enclosure Kit (DEK) Series
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General