GE MM300 Manual page 109
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)
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CHAPTER 4: FIELDBUS INTERFACE
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
Byte
29
13
30
13
31
13
32
14
33
14
34
14
35
14
36
14
37
14
38
14
39
14
40
15
41
15
42
15
43
15
44
15
45
15
46
15
47
15
48
16
49
16
50
16
51
16
52
16
53
16
54
16
55
16
56
17
57
17
58
17
59
17
60
17
61
17
62
17
63
17
64
18
65
18
66
18
67
18
68
18
69
18
70
18
71
18
72
19
73
19
Bit
GSE Bit #
5
53
Reserved
6
54
Reserved
7
55
Reserved
0
56
Reserved
1
57
Reserved
2
58
Reserved
3
59
Reserved
4
60
Reserved
5
61
Reserved
6
62
Reserved
7
63
Reserved
0
64
Reserved
1
65
Reserved
2
66
Reserved
3
67
Reserved
4
68
Reserved
5
69
Reserved
6
70
Reserved
7
71
Reserved
0
72
Reserved
1
73
Reserved
2
74
Reserved
3
75
Reserved
4
76
Reserved
5
77
Reserved
6
78
Reserved
7
79
Reserved
0
80
"Aux U/V Trip"
1
81
"Emergency Stop"
2
82
"Fuse Fail Trip"
3
83
"OpenControl Circuit"
4
84
"Thermistor Trip"
5
85
6
86
7
87
"Self Test Trip"
0
88
"Process ILock F Trip"
1
89
"Process ILock G Trip"
2
90
"Process ILock H Trip"
3
91
"Process ILock I Trip"
4
92
"Process ILock J Trip"
5
93
"Hard Wired Trip"
6
94
"Field Trip"
7
95
"MCC Trip"
0
96
"RTD 6 Trip"
1
97
"Comm Fail Trip"
PROFIBUS DPV1
Ext.
Diag
Byte
7
7
7
8
8
8
8
8
8
8
8
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
13
13
4–31
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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