Prosoft-technology MVI71-MNET Manuel d'utilisateur télécharger pdf (Page 87)

Reference MVI71-MNET ♦ PLC Platform

User Manual Modbus TCP/IP Interface Module

ProSoft Technology, Inc. Page 87 of 109

June 23, 2009

Standard Modbus Protocol Errors

Code Description

1 Illegal Function

2 Illegal Data Address

3 Illegal Data Value

4 Failure in Associated Device

5 Acknowledge

6 Busy, Rejected Message

Module Communication Error Codes

Code Description

-1 CTS modem control line not set before transmit

-2 Timeout while transmitting message

-11 Timeout waiting for response after request

253 Incorrect slave address in response

254 Incorrect function code in response

255 Invalid CRC/LRC value in response

MNET Client Specific Errors

Code Description

-33 Failed to connect to server specified in command

-36 MNET command response timeout

-37 TCP/IP connection ended before session finished

Command List Entry Errors

Code Description

-40 Too few parameters

-41 Invalid enable code

-42 Internal address > maximum address

-43 Invalid node address (<0 or >255)

-44 Count parameter set to 0

-45 Invalid function code

-46 Invalid swap code

-47

ARP could not resolve MAC from IP (bad IP address, not part of a network, invalid

parameter to ARP routine).

-48

Error during ARP operation: the response to the ARP request did not arrive to the

module after a user-adjustable ARP Timeout.

Note: When the client gets error -47 or -48, it uses the adjustable ARP Timeout parameter in the

configuration file to set an amount of time to wait before trying again to connect to this non-existent

server. This feature allows the client to continue sending commands and polling other existing

servers, while waiting for the non-existent server to appear on the network.

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