GE Multilin MM300, Manual

Page: 105 / 158

CHAPTER 4: FIELDBUS INTERFACE PROFIBUS DPV1
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 4–27
Error codes:
Execute Operation
Command (Modbus
function 05H)
The Execute Operation defined for Modbus function code 05H is also available as Profibus
DP-V1 command. The command syntax has a fixed slot = 50H and index = 00H. The
required command must be encoded as data values (16 bits).
The complete MM300 command set is available through this function. The original execute
command table is copied here with corresponding Profibus DP-V1 format :
3 Master -> Slave Request current
security access level
012D 31 2D 2 None
Slave -> Master Answer: current
security access level
31 2D 2 Access
level
4 Master -> Slave Send setpoint (e.g.:
Modbus slave
address)
00AB 50 AB 2 00 FE
Slave -> Master Write success 50 AB 0 None
Profibus DPV1 Error Code Cause
Invalid slot Wrong code was added to the slot. Ensure a valid mask was added to
the memory map address issue to the device.
Invalid index An invalid memory area was defined. Ensure the base address is
correct and that a valid length was specified.
Writing error Ensure a valid writing buffer length was defined without access to
areserved memory area. Also, check if a passcode message
wasissued previously.
If a valid slot, index and length is supplied, the answer is always a
Success message, even if access is forbidden. This behavior was
designed as it to avoid Profibus Master blocking while waiting the
device to process the message internally.
Step Direction Description Parameter
Address
(hex)
Profibus DPV1 Message (hex)
Slot
Index Length
(bytes)
Data
Operation Code
(decimal)
Command Profibus DPV1 (hex)
Slot
Index Length
(bytes)
Data
1 Reset 50 00 02 00 01
2 Lockout Reset 50 00 02 00 02
3 Stop 50 00 02 00 03
4 Start A 50 00 02 00 04
5 Start B 50 00 02 00 05
96 Clear Last Trip Data
Prompt
50 00 02 00 60
97 Reset MWh and Mvarh
Meters
50 00 02 00 61
99 Clear Counters 50 00 02 00 63
100 Clear Event Records 50 00 02 00 64
102 Clear Maintenance Info. 50 00 02 00 66
103 Clear Datalog 50 00 02 00 67
112 Clear RTD Maximums 50 00 02 00 70
113 Reset Motor Information 50 00 02 00 71
114 Auto Mode 50 00 02 00 72