Tony,
We recently used EPICS drivers (developed elsewhere) to interface three
PLCs:
a) Allen Bradley PLC5/40E,
b) Gould/Modicon 984 model 780,
c) GE Series Six.
PLC (a) uses a DCM module in the AB over a serial line to a VME scanner
module. The AB driver is maintained by ANL.
PLC (b) and (c) use the Modbus protocol, over RS-232. The Modbus driver is
maintained by LANL.
Our IOC is a Motorola MVME-177.
--
Paul Sichta
Princeton Plasma Physics Laboratory
609-243-3477
----- Original Message -----
From: Tony Wilson <[email protected]>
To: EPICS Techtalk <[email protected]>
Sent: Monday, November 22, 1999 12:55 PM
Subject: EPICS drivers for PLCs?
>
> We are currently evaluating various types of PLCs for use at the CLS.
> We would like to know which types have EPICS drivers available. I
> currently have a driver for Allen Bradley using df1 protocol over a
> serial line. Though I am unsure if it is a general driver or only
> supports specific modules. I have been unsuccessful in locating
> anything for MODICON (Modbus or Modbus+) or Siemens hardware.
> Information about any of these three dirvers would be welcome.
>
>
> --
> Tony Wilson e-mail: [email protected]
> Canadian Light Source Phone: (306) 966-8529
> University of Saskatchewan FAX: (306) 966-6058
> 107 North Rd. Home phone: (306) 244-1431
> Saskatoon
> Saskatchewan, Canada
> S7N 5C6
>
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