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v10.0.1.x for R2026a
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IO753 Usage Notes v2

IO753 Usage Notes v2 — Usage information about the I/O module

Description

This section provides further information about how to configure the IO753 Modbus TCP Client module.

Front Plate Description

IO753 PCI and PCIe modules

The IO753 acts as one Modbus TCP Client exclusively. The two RJ45 connectors simply serve to build up a line-based network structure. Plug the cable from the previous Modbus TCP Server into the first socket. Connect the second socket with the next Modbus TCP Server. The LEDs described below indicate the communication status of the single Modbus TCP Client.

The rotary switch has no functional role.

IO753 mPCIe module

Note that in some real-time target machines, the mPCIe module is reversed; that is, the Error LED appears on the right.

LED Status Description

LEDColorStateMeaning
SYSGreenOnOperating system running
 Green/YellowBlinkingSecond stage bootloader is waiting for firmware
 YellowOnBootloader netX (= romloader) is waiting for second stage bootloader
 OffOffPower supply for the device is missing or hardware defect
RUN/COM1GreenOnConnected: OMB task has communication. At least one TCP connection is established
 GreenFlashing (1 Hz) Ready, not yet configured: OMB task is ready and not yet configured
 GreenFlashing (5 Hz) Waiting for Communication: OMB task is configured
 OffOffNot Ready: OMB task is not ready
ERR/COM2OffOffNo communication error
 RedFlashing (2 Hz, 25% on) System error
 RedRedCommunication error active

Note that only the IO753 PCI and PCIe modules have the SYS LED. This LED does not feature on the IO753 mPCIe module.

Status Codes

For the list of status codes, please refer to Status Codes for Protocols Supported with the IO64x/IO75x Modules.