Configuration

Configuration of the communication interruption

Configure the Modbus time out

A communication detected fault (Err5 and Err8) is triggered if the Altivar 212 does not receive any valid Modbus requests at its address within a predefined time period (time out) set in the [Com. time out] (F803) parameter. The timer starts when the communication has been established for the first time (valid frame, drive address matches). Any Modbus request function is taken into account to reactivated the timer (read, write and identification).

Access to the parameter

This parameter is accessible in the [COMMUNICATION MENU] COM submenu of [PROGRAMMING MENU] Programming mode.

Description

Parameter

Modbus

Setting

Unit

Default

Valid

 

address

 

 

setting

after

 

 

 

 

 

 

[Com. time out] (F803)

2051

0: Communication detection disabled

s

3

Setting

Communication time out

16#803

1 ... 100: 1 to 100 seconds

 

 

 

 

 

 

 

 

 

WARNING

LOSS OF CONTROL

If F803 is set to 0, communication control will be inhibited.

For safety reasons, inhibiting the communication interruption detection should be restricted to the debug

 

phase or to special applications.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

Monitoring the Modbus communication status

Modbus communication status are displayed in Monitoring mode. This parameter enables to check the modbus communication on RJ45 and OpenStyle port.

On the embedded display terminal

Display

Display on graphic

Description

example

display option

 

 

 

 

 

 

 

 

Mb

[Mdb com stat]

ON:

 

Modbus

OFF:

 

communication status

 

 

 

 

 

 

 

 

OpenStyle Tx

RJ45 Rx OpenStyle Rx

RJ45 Tx

On the graphic display terminal

When Rx and/or Tx are displayed in this row their state is inactive

RJ45: Mb activity on RJ45 port

Without Communication

B-A-COM:

Mdb com statMb activity

on OpenStyle port

RJ45 B - A - COM

Rx

Tx

Rx

Tx

 

 

 

Switch between local to remote

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mode using the F4 button on the

 

 

 

 

 

 

 

display terminal

Rem

 

 

Loc/Rem

 

 

 

 

 

 

Example: With Communication on RJ45 port

Mdb com stat

RJ45 B - A - COM

Tx Rx Tx

Rx

Mdb com stat

RJ45 B - A - COM

Rx

Rx

Tx

 

Tx

 

RemLoc/Rem

RemLoc/Rem

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S1A53844 01/2011

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Schneider Electric Altivar 212 manual Configuration of the communication interruption