Goals and Symptoms
How to interpret the front panel lights when diagnosing problems with the M340.
Causes and Fixes
Modicon M340 Processor Troubleshooting
- The Modicon M340 Programmable Automation Controller is a Mid-range automation system providing small size, yet powerful 32-bit processor for demanding OEM machine and industrial process applications. It is programmed using our cross-platform IEC 61131-3 application development software, Unity Pro (v3.0 or higher). The front panel has a series of LEDs that indicate the status of the M340 processor, SD Memory Card, and system communications.
The Modicon M340 is available in the following models.
M340 Processors
BMXP341000 Standard Level 1, 2MB RAM, USB port, - 1-communication port: ModBus/Serial, includes 8MB memory card
- 1 USB Port for programming
1 slot for a memory SD-card
1 communication port: serial link
Shipped with 1 standard memory SD-card
- 1 USB Port for programming
BMXP342010 Advanced Level 2, 4MB RAM, USB port,- 2-communication ports: ModBus/Serial and CANopen master includes 8MB memory card.
BMXP342020 Advanced Level 2, 4MB RAM, USB port,- 2-communication ports: ModBus/Serial and Ethernet-ModBus/TCP, includes 8MB memory card
BMXP342030 Advanced Level 2, 4MB RAM, USB port,- 2-communication ports: Ethernet-ModBus/TCP and CANopen master includes 8MB memory card.
Processor Status Displays
Introduction
There are several LEDs available on the front panel of each processor, enabling
rapid diagnosis of the PLC status.These LEDs provide information on:
· PLC functional status
· The memory card status
· Communication with the I/O modules
· Modbus Serial communication
· Communication on the CANopen network
· Communication on the Ethernet networkIllustration
The following diagrams shows the physical location of the LEDs on the front panel of the BMX P34 processors:
BMX P34 1000/2000 Processors LEDs
Display differences between version 1 and version 2 of the
BMX P34 20x0x module.
LED Indications
Ethernet LED
Legacy KB System (APS) Data: RESL200598 V1.0, Originally authored by MiOB on 11/26/2009, Last Edited by MiOB on 11/26/2009
Related ranges: Modicon M340.
