Prosoft-technology PS69-DPS User Manual download pdf (Page 47)

PS69-DPS ♦ CompactLogix or MicroLogix Platform Configuration and Start-Up

Profibus DP Slave Communication Module User Manual

ProSoft Technology, Inc. Page 47 of 108

May 9, 2014

2.3.5 Explanation of settable configuration values

Busaddress

The valid PROFIBUS address range is from 0 to 125. The module has two

rotating address switches to set the network address from 0 to 99.

With the rotating switches, however, you are not able to select bus addresses

above 99. If you choose 0 on the address switches, then the module will take the

address parameter from the configuration data array. Now you are able to set up

bus addresses above 99.

Address Switches

Configuration Address Parameter

Active Bus Address

Description

1 .. 99

Address switches are valid

0 .. 125

Configuration parameter is valid

> 125

Invalid (will cause an initialization

error)

XX - Don't Care

Force User Configuration

If the parameter ForceUserConfiguration is set to 1, the slave will not start its

network communication until the master and slave configurations match

each other. If this value is set to 0, the slave accepts any valid configuration sent

from the master.

Watchdog Timeout

The Slave module supervises its I/O exchange with the controller with a timeout.

If the controller does not update the output data within this time, the Slave stops

the cyclic data exchange to the master and goes into a safe state.

If the parameter ForceUserConfiguration is set to 0 then the module calculates

automatically a timeout value by the RPI (Requested Packet Interval). The

calculated watchdog results to 2 x the RPI (+/- 5ms). The smallest watchdog

value is 15 ms. The module will round the watchdog to a multiples of 5 ms.

WATCHDOG_TIME (ms) = MAX ( 2 * RPI ; 15 ) (+/-5ms)

If the parameter "ForceUserConfiguration" is set to 1 the module will take the

watchdog value from the configuration array. Make sure that the watchdog is not

smaller than the RPI. The module will also round the watchdog to the next

multiple of 5ms.

Number of Valid Configuration Bytes

This parameter holds the number of valid configuration bytes that define

PROFIBUS Input/Output modules.

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