Caple C806C Manuál s instrukcemi stáhnout pdf (Strana 26)

PF2100

Modbus Card Instruction Manual v1.1

Jan 5, 2012

Page 22

The “TX” LED Does Not Light When the Master Sends a Command

The address is incorrect, the wiring is incorrect, the baud rate is incorrect, or the card is damaged.

• Double check that the Modbus Card has the correct address in the menu 6.8.

• Double check that the Master is using the correct address to talk to the Modbus Card

• Double check the wiring of the card and the master device

• Double check the baud rate settings for the card and the master device

• Contact Profire to arrange for a hardware repair or replacement.

The “TX” LED Blinks but the Master Receives Garbage Data

The Modbus Card may be responding before the Master is ready. This problem may be common when certain types of repeaters are used on the bus.

• Try changing the Rx to Tx delay from 2ms to 25ms using the DIP switch.

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Caple C806C Manuál s instrukcemi Strana 26