GE MM300 Manual page 95
Motor management system/low voltage motor protection and control
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Also See for MM300:
- Instruction manual (198 pages) ,
- Quick start manual (77 pages) ,
- Installation recommendations (21 pages)
Table of Contents
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CHAPTER 4: FIELDBUS INTERFACE
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
Byte
234
39
235
39
236
39
237
39
238
39
239
39
240
40
241
40
242
40
243
40
244
40
245
40
246
40
247
40
248
41
249
41
250
41
251
41
252
41
253
41
254
41
255
41
256
42
257
42
258
42
259
42
260
42
261
42
262
42
263
42
264
43
265
43
266
43
267
43
268
43
269
43
270
43
271
43
272
44
273
44
274
44
275
44
276
44
277
44
278
44
Bit
GSE Bit #
2
258
Reserved
3
259
"Comm Stop"
4
260
"Fuse Fail Inhibit"
5
261
"Phase Reversal Inhibit"
6
262
"Low Aux Voltage Inhibit"
7
263
"UV Restart Inhibit"
0
264
Reserved
1
265
Reserved
2
266
Reserved
3
267
Reserved
4
268
"UV Restart"
5
269
Reserved
6
270
Reserved
7
271
Reserved
0
272
Reserved
1
273
Reserved
2
274
Reserved
3
275
Reserved
4
276
Reserved
5
277
Reserved
6
278
Reserved
7
279
Reserved
0
280
"Process ILock F Stop"
1
281
"Process ILock G Stop"
2
282
"Process ILock H Stop"
3
283
"Process ILock I Stop"
4
284
"Process ILock J Stop"
5
285
"HW Stop"
6
286
"Field Stop"
7
287
"MCC Stop"
0
288
Reserved
1
289
Reserved
2
290
Reserved
3
291
"Process ILock A Stop"
4
292
"Process ILock B Stop"
5
293
"Process ILock C Stop"
6
294
"Process ILock D Stop"
7
295
"Process ILock E Stop"
0
296
"Forward Limit"
1
297
"Reverse Limit"
2
298
"Starts/Hr Inhibit"
3
299
"Time Between Inhibit"
4
300
Reserved
5
301
Reserved
6
302
Reserved
PROFIBUS DP
Ext.
Diag
Byte
33
33
33
33
33
33
34
34
34
34
34
34
34
34
35
35
35
35
35
35
35
35
36
36
36
36
36
36
36
36
37
37
37
37
37
37
37
37
38
38
38
38
38
38
38
4–17
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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