Experimental Physics and
Industrial Control System

Hi Mauro

 

Although I have not much of a  chance to play with the M340 series CPU I have looked at the configuration of them in UnityPro and see no reason that the configuration Mark described here (that is used on a Schneider Premium CPU) will not work on the M340.

 

I’m happy to help with the PLC end if you need any

 

Regards

 

800 Blackburn Road, Clayton, Victoria 3168

 

Hi Mauro,

 

The Koyo PLCs support reading the X inputs and Y outputs directly over Modbus.  

 

The Modicon PLCs do not support this, they can only read the M or MW memory locations over Modbus.  Thus, you will need to modify your ladder logic to copy the inputs and outputs you need to M or MW locations (note that you may already be doing this for other purposes).

 

Here is an example script I run for a Modicon PLC.  I am using the MW locations to read 16-bit analog values and logic bits grouped into 16-bit words.

 

I am using the M locations as outputs to write bits from EPICS to the PLC.  These are used to request that the PLC perform certain actions if it is safe to do so.

 

######

# Modicon PLC

drvAsynIPPortConfigure("Modicon","10.114.2.71:502",0,1,1)

modbusInterposeConfig("Modicon",0,0)

 

# Read locations %MW0 to %MW16 as words.      Function code=3.

drvModbusAsynConfigure("M1_W000_In",   "Modicon", 3,    0,  16,     0,  100, "Modicon")

 

# Read locations %MW100 to %MW199 as words.   Function code=3.

drvModbusAsynConfigure("M1_W100_In",   "Modicon", 3,  100,  100,    0,  100, "Modicon")

 

# Write locations %MW100 to %MW199 as words.  Function code=6.

drvModbusAsynConfigure("M1_W100_Out",  "Modicon", 6,  100,  100,    0,    1, "Modicon")

 

# Read locations %MW200 to %MW299 as words.   Function code=3.

drvModbusAsynConfigure("M1_W200_In",   "Modicon", 3,  200,  100,    0,  100, "Modicon")

 

# Read locations %MW300 to %MW399 as words.   Function code=3.

drvModbusAsynConfigure("M1_W300_In",   "Modicon", 3,  300,  100,    0,  100, "Modicon")

 

# Write locations %MW300 to %MW399 as words.  Function code=6.

drvModbusAsynConfigure("M1_W300_Out",  "Modicon", 6,  300,  100,    0,    1, "Modicon")

 

# Access 32 bits %M128 to %M160 as outputs.   Function code=5.

drvModbusAsynConfigure("M1_B128_Out",  "Modicon", 5,  128,   16,    0,    1, "Modicon")

 

# Hex trace format on TCP server

asynSetTraceIOMask("Modicon",0,4)

# Turn on asynError and asynTraceIODriver on TCP server

#asynSetTraceMask("Modicon",0,9)

 

dbLoadTemplate "$(TOP)/db/Modicon.substitutions"

######

 

This is a part of the contents of Modicon.substitutions, the EPICS database:

 

# asyn record for the underlying asyn TCP port

file "$(ASYN)/db/asynRecord.db" { pattern

{P,              R,               PORT,      ADDR,   IMAX,    OMAX}

{SR05ID01PLC01:  ASYN_REC,        Modicon,     0,      80,      80}

}

 

# These are the Mn inputs done with word access (%MW0 - %MW15)

file "$(MODBUS)/db/bi_word.template" { pattern

{P,                R,                            PORT,     OFFSET,       MASK,       ZNAM,        ONAM,       ZSV,      OSV,        SCAN}

{SR05ID01CCG01:,   PRESS_STATUS,                 M1_W000_In,    0,     0x0001,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG01:,   PRESS_LATCH_STATUS,           M1_W000_In,    1,     0x0001,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG02:,   PRESS_STATUS,                 M1_W000_In,    0,     0x0002,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG02:,   PRESS_LATCH_STATUS,           M1_W000_In,    1,     0x0002,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG03:,   PRESS_STATUS,                 M1_W000_In,    0,     0x0004,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG03:,   PRESS_LATCH_STATUS,           M1_W000_In,    1,     0x0004,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG04:,   PRESS_STATUS,                 M1_W000_In,    0,     0x0008,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG04:,   PRESS_LATCH_STATUS,           M1_W000_In,    1,     0x0008,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG05:,   PRESS_STATUS,                 M1_W000_In,    0,     0x0010,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

{SR05ID01CCG05:,   PRESS_LATCH_STATUS,           M1_W000_In,    1,     0x0010,         OK,       Fault,  NO_ALARM,    MAJOR,  "I/O Intr"}

 

 

Let me know if you have questions or problems:

 

 

Mark

 

-----Original Message-----
From: Mauro Giacchini [mailto:[email protected]]
Sent: Tuesday, January 20, 2009 12:15 PM
To: Mark Rivers
Subject: RE: Schneider Electric - BMXP342020 - CPU340-20

 

Hi Mark,

the goal to me is monitoring few Inputs/Outputs of those PLC,

therefore, I'm looking to a driver/device support.

 

Have you got someone EPICS ioc application example to me?

I'm reading your documentation but I've found only the Koyo

documentation, not the PLC Schneider.

 

Thank you very much to your support.

Mauro.

 

 

On Jan 20, 2009 06:33 PM, Mark Rivers <[email protected]> wrote:

 

> Hi Mauro,

>

> I'm not sure exactly what you are looking for, but I have used my

> EPICS

> Modbus driver and standard asyn device support with these Schneider

> Modicon PLCs:

>

> http://cars.uchicago.edu/software/epics/modbus

>

> Mark

>

>

> -----Original Message-----

> From: [email protected]

> [mailto:[email protected]] On Behalf Of Mauro Giacchini

> Sent: Tuesday, January 20, 2009 10:55 AM

> To: [email protected]

> Subject: PLC: Schneider Electric - BMXP342020 - CPU340-20

>

> Dear all,

> Has anyone a device driver for the PLC Schneider Electric - BMXP342020

> -

> CPU340-20 ?

> Thanks,

> Mauro.

>

> --

>

>

> 

> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

> ~~

> Mauro Giacchini

>

> Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di

> Legnaro

> V.le dell'Universita', 2

> 35020 LEGNARO (PD) - ITALY

> Tel. +39.049.8068558

> Fax. +39.049.641925

> Skype yakman000

>

> EPICS _at_ LNL: http://www.lnl.infn.it/~epics/

>

>

> 

> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

> ~~~

>

>                

>

>

 

 

 

      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mauro Giacchini

 

Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Legnaro

V.le dell’Universita', 2

35020 LEGNARO (PD) – ITALY

Tel. +39.049.8068558

Fax. +39.049.641925

 

EPICS _at_ LNL http://www.lnl.infn.it/~epics/

 

 

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