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cmseaton42 / node-ethernet-ip

A Lightweight Ethernet/IP API written to interface with Rockwell ControlLogix/CompactLogix Controllers.
MIT License
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Unable to read from Control Logix PLC #5

Closed MattCost closed 6 years ago

MattCost commented 6 years ago

Unable to read anything from a control logic PLC. Unable to display controller properties, unable to read a tag value.

Current Behavior

When connecting to PLC, an UnhandledPromiseRejectionWarning is given. I am able to ping the PLCs IP. (EN2TR card) I am able to go online with Studio 5000 programming software. PLC is in Run mode.

Expected Behavior

Connection to PLC should complete, and plc properties would be written to console

Steps to Reproduce

  1. Download current version of Node and install. node-v9.9.0-x64
  2. Create a project directory and install node-ethernet-ip ("npm install ethernet-ip --save")
  3. Create plc01.js file with sample connection code
  4. Run node plc01.js
  5. Receive error on console

Your Environment

4 slot rack, plc is in slot 0. EN2TR cards in slot 1 and slot 2. Slot 3 is open.

Error output

(node:14792) UnhandledPromiseRejectionWarning: # (node:14792) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) (node:14792) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Test Code

const { Controller } = require("ethernet-ip");
const PLC = new Controller();
// Controller.connect(IP_ADDR[, SLOT])
// NOTE: SLOT = 0 (default) - 0 if CompactLogix
PLC.connect("10.115.45.55", 0).then(() => {
 console.log("Connected to PLC!");
 console.log(PLC.properties);
});
cmseaton42 commented 6 years ago

Hey man, thanks for letting us know. Your code looks fine. I think this may be related to #1.

If you have a few minutes, can you run the following code and let me know what it prints?

const { Controller } = require("ethernet-ip");
const PLC = new Controller();

// Controller.connect(IP_ADDR[, SLOT])
// NOTE: SLOT = 0 (default) - 0 if CompactLogix
PLC.connect("10.115.45.55", 0).then(() => {
    console.log("Connected to PLC!");
    console.log(PLC.properties);
}).catch(e => {
    console.log(PLC.properties);
    console.log("=========================");
    console.log(e);
});

This should give some more insight into what might be happening.

MattCost commented 6 years ago

Results

C:\NodeJS\PLC01>node plc01.js { name: '1756-L75/B LOGIX5575', serial_number: 14878836, slot: 0, time: null, path: <Buffer 01 00>, version: '28.12', status: 12384, faulted: false, minorRecoverableFault: false, minorUnrecoverableFault: false, majorRecoverableFault: false, majorUnrecoverableFault: false, io_faulted: false }

{ generalStatusCode: 8, extendedStatus: [] }

Time Settings. Only issue is DST adjustment is off. image

cmseaton42 commented 6 years ago

ahhhh, yep this is definitely related to #1. The readWallClock method in the connect method is causing the issue, apparently this feature only works with the latest rockwell releases (e.g. L8 series controllers). We will update the code soon and release a patch today. @patrickjmcd or myself will update the thread once the changes are live. Thanks for helping to track this down =].

patrickjmcd commented 6 years ago

You should be able to upgrade the npm package npm install --save --upgrade ethernet-ip and your issue should be resolved. The call to readWallClock has been removed so you should no longer get that error.

cmseaton42 commented 6 years ago

@MattCost Can you confirm that v1.1.1 resolves your issue?

MattCost commented 6 years ago

Yup! All working now

cmseaton42 commented 6 years ago

Awesome! 🎉 Closing this.

RuanV commented 4 years ago

HI Can Some one please help me I Have a Similar problem. But I keep getting this error: caught error!Error Code:undefined { generalStatusCode: 5, extendedStatus: [] }.

Does this mean information is missing in the readtag parameters? This is my Code: var test = new Tag("CCW_Roll_RRCtrl", null, DINT); PLC.connect("192.168.1.200", 2).then(async () => { var { name } = PLC.properties;

console.log(`\n\nConnected to PLC ${name}...\n`);
await PLC.readTag(test);
console.log(tes.value);

}).catch(error => { console.error('caught error!' + 'Error Code:' + error.Code, error); });

Secondly: Does this module connect with the Allen bradley Rockwell 1756-EN2T/D\u0003\u0000\u0000\u0000 PLC

jhenson29 commented 4 years ago

1756-EN2T is an Ethernet card, not a PLC. You are connecting to slot 2. Is that where the EN2T is? Because that would be wrong. You need to enter the slot number for the processor, the one with a keyswitch and probably a 1756-Lxx part number. As a reminder, slot counting starts at 0.

RuanV commented 4 years ago

Okay great, I did not take that in consideration. I will test today and see what is my results. Thanks for the assistance

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