ProSoft Technology PS69-DPS User Manual
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
XX
1 .. 99
Address switches are valid
0
0 .. 125
0 .. 125
Configuration parameter is valid
0
> 125
XX
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.