Gateway config issue

2020-02-27T14:45:20.303000Z

Originally created by: M.Schaber

Hi,

Here are some snippets using the new functions:
Configuring a device via gateway name and device IP addres:

proj = projects.open(path)
dev = proj.find("Device")[0]
dev.set_gateway_and_ip_address("Gateway-1", "127.0.0.1")

printing all available gateway drivers:

def printGatewayDriver(drv):
   print("BEGIN")
   print("GW driver: {} Guid={}".format(drv.name, drv.guid))
   for param in drv.gateway_parameters:
      print("Id={} Name={} Desc.={} ParamType={} DefaultValue={}".format(param.id, param.name, param.description, param.parameter_type, param.default_value))
   print("END")
   
print("------ Available gateway drivers -----")
for drv in online.gateway_drivers:
   printGatewayDriver(drv)

print all gateway parameters for the TCP/IP driver:

Zitat:
tcpDriver = online.gateway_drivers["TCP/IP"]
tcpParams = tcpDriver.gateway_parameters
for param in tcpParams:
print("id: %s, name: %s, description: %s" % (param.id, param.name, param.description))

Adding a new gateway:

secondGWName = "Gateway-QS"
params = { 0: "serverqs", 1: "1217"}
tcpDriver = online.gateway_drivers["TCP/IP"]
newGw = online.gateways.add_new_gateway(secondGwName, params, tcpdriver)

HTH,
Markus

Gateway config issue

2020-02-27T14:45:19.780000Z

Could some please post an example about how to set the gateway with new API available in CODESYS V3.5.8.0.

I have seen in the online help that there are some interface (IScriptGateways & IScriptGateway) available.
But I do not know how to use them.

Thanks.

Gateway config issue

2020-02-27T14:45:18.295000Z

Oh it works now (I tried what you suggested but by itself setting once the gateway is not enough).

I had to set the project file to save the network settings, save the project and then the gateway guid I got previously turned to be valid.

So until one checks that save parameter option in a project and configures the gateway at least once,
no matter whether the gateway guid is valid, codesys scripting will throw this exception

Gateway config issue

2020-02-27T14:45:17.768000Z

Hi etamgul.

Getting the gatewayPath in codesys.

With CODESYS V3.5 SP8 we introducted a much better API for handling gateways and addresses. You can add, configure, find and remove gateways and also scan the network for available devices.

BR
Martin

Gateway config issue

2020-02-27T14:45:17.207000Z

I have (assumably) 2 identical setups of CDS 3.5 SP7.
Previously I was configuring the gateway on the first machine with the following code:

        gateway_guid = '3261a15d-434d-4868-9e1f-1bfa38e92408'; # HARDCODED_VALUE, gateway_guid = self.device.get_gateway()
        gateway_dev_addr = device_address   # HARDCODED_VALUE
   
        log.debug('Gateway {} set with GUID: {}'.format(str(gateway_guid),str(gateway_dev_addr)));
        self.device.set_gateway_and_address(gateway_guid, gateway_dev_addr);

Now that I have a 2nd machine, I wanted to check if it is still working and I got the error:

ValueError: Gateway 3261a15d-434d-4868-9e1f-1bfa38e92408 not found.

I thought the GUID has changed so I modified to code to use the get_gateway method and suprisingly that gave the exact same GUID,
and along with it, the result is also the same.
No matter whether I use the harcoded or the 'dynamic' way, on my 2nd machine I get the above exception.

Any idea what could be wrong?

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