GE MM300 Manual page 96
Motor management system/low voltage motor protection and control
Hide thumbs
Also See for MM300:
- Instruction manual (198 pages) ,
- Quick start manual (77 pages) ,
- Installation recommendations (21 pages)
Table of Contents
Advertisement
PROFIBUS DP
4–18
Byte
279
44
280
45
281
45
282
45
283
45
284
45
285
45
286
45
287
45
288
46
289
46
290
46
291
46
292
46
293
46
294
46
295
46
296
47
297
47
298
47
299
47
300
47
301
47
302
47
303
47
304
48
305
48
306
48
307
48
308
48
309
48
310
48
311
48
312
49
313
49
314
49
315
49
316
49
317
49
318
49
319
49
320
50
321
50
322
50
323
50
Bit
GSE Bit #
7
303
Reserved
0
304
"Any Stop"
1
305
"Thermal Inhibit"
2
306
Reserved
3
307
Reserved
4
308
Reserved
5
309
"Restart Inhibit"
6
310
Reserved
7
311
Reserved
0
312
Reserved
1
313
Reserved
2
314
Reserved
3
315
Reserved
4
316
Reserved
5
317
Reserved
6
318
Reserved
7
319
Reserved
0
320
Reserved
1
321
Reserved
2
322
Reserved
3
323
Reserved
4
324
Reserved
5
325
Reserved
6
326
Reserved
7
327
Reserved
0
328
Reserved
1
329
Reserved
2
330
Reserved
3
331
Reserved
4
332
Reserved
5
333
Reserved
6
334
Reserved
7
335
Reserved
0
336
Reserved
1
337
Reserved
2
338
Reserved
3
339
Reserved
4
340
Reserved
5
341
Reserved
6
342
Reserved
7
343
Reserved
0
344
Reserved
1
345
Reserved
2
346
Reserved
3
347
Reserved
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
CHAPTER 4: FIELDBUS INTERFACE
Ext.
Diag
Byte
38
39
39
39
39
39
39
39
39
40
40
40
40
40
40
40
40
41
41
41
41
41
41
41
41
42
42
42
42
42
42
42
42
43
43
43
43
43
43
43
43
44
44
44
44
Hide quick links:
Advertisement
Table of Contents
Need help?
Do you have a question about the MM300 and is the answer not in the manual?
Questions and answers
we have a problem with device MM300. it says that the device is invalid through the software and does not read the device. the communication is through RS 485. is it possible to give us an advice or send us some reccomendations or instructions?
For a GE MM300 device that is not recognized by software and communicates via RS485, follow these troubleshooting steps:
1. Ensure correct RS485 wiring:
- Use two-wire RS485 in a daisy chain configuration.
- Install a 120 Ohm resistor in series with a 1 nF ceramic capacitor at each end of the link.
- Use shielded wire and ground the shield at only one location.
2. Check device addressing and termination:
- Confirm proper device address and ensure no address conflicts.
- Verify that termination networks are correctly installed at both ends.
3. Confirm half-duplex communication:
- Ensure that the system supports half-duplex communication and not sending and receiving data simultaneously.
4. If using USB for setup (e.g., USB-to-RS485 converter) and the device is not recognized:
- Repeat the connection procedure 2–3 times.
- If still not recognized, uninstall the USB driver from Device Manager under modems.
- Disconnect the USB cable, wait at least 10 seconds, then reconnect.
- When prompted by the Hardware Wizard, select "No, not this time," then "Install the software automatically," and press "Continue Anyway."
- Finish the installation and check if the USB device appears in the setup software.
These steps help ensure proper hardware connection and correct software recognition of the MM300 device.
This answer is automatically generated