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9/28/23, 4:30 PM
4.2 I/O Connector
The LMU-5541™'s features expanded I/O capabilities via its 22-Pin Molex 43045-2202 connector. Its pin-out is as follows:
Pin
Signal Name
1
Input 1
2
Input 2
3
Input 3
4
Input 4
5
Input 5
6
Input 6
7
Input 7
8
1BB T Data
9
1BB GND
10
1 BB R Data
11
1 BB Gnd
12
Output 0
13
Output 1
14
Output 2
15
Output 3
16
Output 4
17
Output 5 - LED
18
Output 6 - LED
19
ADC 2
20
ADC 3
21
ADC 4
22
ADC 5
4.3 Serial Interface Connectors
The LMU-5541™ offers 2 serial interface connections (Host/Aux1 and DB-9 SerialAux 2) on its front face. Host/AUX1 is provided via a Molex 43650-0501 connector
using the following pin out:
Pin
Signal Name
1
VIN_FILT
2
VCC3V3
3
Ground
4
TX
5
RX
Users should only use CalAmp approved serial adapters for these connections.
4.4 Serial Interface Cables & Accessories
Serial Connectivity is a one cable solution. You can use either part numbers 134364-SER or 134364-MDT.
LMU Serial Cable (Part Number 134364-SER)
https://puls.calamp.com/wiki/LMU-5541_Hardware_%26_Installation_Guide
LMU-5541 Hardware & Installation Guide - PULS Wiki
Description
Input 1 – Digital Input
Input 2 – Digital Input
Input 3 – Digital Input
Input 4 – Digital Input
Input 5 – Digital Input
Input 6 – Digital Input
Input 7 – Digital Input
1 Bit Bus Data (T)
1 Bit Bus Ground
1 Bit Bus Data (R)
1 Bit Bus Ground
Output 0 - Starter Disable Relay Driver
Output 1 - Digital Output
Output 2 - Digital Output
Output 3 - Digital Output
Output 4 - Digital Output
Output 5 - LED 1 Driver
Output 6 - LED 2 Driver
Analog to Digital Input 2
Analog to Digital Input 3
Analog to Digital Input 4
Analog to Digital Input 5
LMU-5541™ Header (looking into LMU)
Description
134364-SER Color
Filtered LMU Power
Red
3.3V Power
Orange
Ground
Black
Transmit Data
Blue
Receive Data
Green
Serial Interface Connector
5C889 Color
Input or Output
Blue
Orange
Violet
Gray
Green & White
Blue & White
Black & White
Green & Black
Input/Output
Black
Ground
Orange & Black
Input/Output
Black
Output
Green
Output
Brown
Output
Yellow
Output
Blue & Orange
Output
Green & Black & Orange
Output
Red & Green
Output
Orange & Green
Output
Black & Red
White & Red
Orange & Red
Blue & Red
Input or Output
Power Supply
Power Supply
Ground
Input to LMU
Output From LMU
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
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