Specifications

7.4.2. Router mode - timing

Router mode web based settings may cause time problems in more complex networks. CLI lets you

adjust radio channel access parameters and set up repetition taking into account the number of re-

translations in your radio network.

If you only use the Profibus protocol with RipEX and no other broadcast interferes with your network,

you can configure certain parameters to shorten the access time to channel using CLI. If you want to

use packet acknowledgement on the radio channel, you can shorten the repetition timeout if ACK is

turned off.

Set up using CLI:

cli_cnf_set_device_mode:

Turns on ACK-ack n

Number of retries 2-retries 2

Turns off progressive retries-rto-prog f

Shortens the retry timeout to the minimum value of 10 Bytes-rto-fix 10

Shortens the variable retry timeout to the minimum value of 10 Bytes-rto-var 10

Will receive immediately after request – random channel access is not used-slots-rx 0

Will transmit immediately after request – random channel access is not used-slots-tx 0

Same settings should be used for all devices.

To find out more about CLI, see RipEX manual chapter CLI Configuration

Set the following in Profibus parameters:

Tslot_Init 16383

Note: This setting is only appropriate for certain types of networks; changes should only be made by

experienced users!

Connecting RS 485

Connector layout of RipEX COM 2 for RS 485 and the corresponding PIN's on Siemens Simatic S7.

5 5

9 9

8 8

7 7

6 6

1 1

2 2

3 3

4 4

SIEMENS RIPEX

38 23

Fig. 7.3: RS485 connection

http://www.racom.eu/eng/products/m/ripex/cli-conf.html

Profibus