GE 90-30 series COMM_REQ slowing down data usage

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Thread Starter

Suraj Shetty

Set-up. Main plant PLC talks to 5 remote PLC over DSL line. at remote plants, each have cellular modems to connect to the internet. they all have cisco firewall with VPN connection established.

GE 90-30PLC which are using COMM_REQ SRTP channel commands. and these are communicating over ethernet through cellular modems. the data plan on the cellular modem has a limit of 5GB only.

The PLC have been communicating GOOD with the only exception that it is using a lot of DATA (maybe around 9-20 Mb/hr which puts it close to 5 gb/month or more.
how to slow it down.?

Regards
Suraj
 
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Curt Wuollet

Maybe a counter in the sending rung so it sends every other scan or less. I could be way off I don't remember much about 90/30 comms.

Regards
cww
 
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