Parameter Acyclic Write Operation (Modbus Function 10H) - GE MM300 Manual

CHAPTER 4: FIELDBUS INTERFACE
Parameter Acyclic
Write Operation
(Modbus function 10H)
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
Read Set Point examples (Modbus function 03H):
Data to be Read Setpoint Address
(hex)
Communication 00AB
Settings- slave
address
Motor Data Setup- 011C
motor name
Auto/Manual Control- 0623 - 0633
all data
Error codes:
Profibus DPV1 Error Code
Invalid slot
Invalid index
The DP-V1 addressing principle defined for reading operations is applicable for parameter
acyclic writing. The only difference is that set point data address must be added to 1000H.
Write Set Point examples:
Data to be Read Setpoint Address
(hex)
Communication 00AB
Settings- slave
address
Motor Data Setup- 011C
motor name
Security - 0457
passcode entry
The following sequence must be followed to issue a parameter set command when
security is enabled.
Any rejected message, considering a valid address was defined, is answered with "Writing
error" status.
When a valid password is received by the device, it enables the associated access level for
5 minutes. It's disabled automatically after this period. Also, it can be disabled when
master issues a 0000H password entry.
DPV1 Composed
Address (hex)
00AB + 4000 = 40AB
011C + 4000 = 411C
0623 + 4000 = 4623
Cause
Wrong code was added to the slot. Ensure 3000H or 4000 was added
to the memory map address issued to the device.
An invalid memory area was defined. It can be caused by a base
invalid memory address or a request to read a reserved memory area.
Ensure the base address is correct and that a valid length was
specified.
DPV1 Composed
Address (hex)
00AB + 1000 = 10AB
011C + 1000 = 111C
0457 + 1000 = 1457
PROFIBUS DPV1
DPV1 Parameters Length
(hex) (bytes)
Slot Index
40 AB 2
41 1C 20
46 23 17
DPV1 Parameters Length
(hex) (bytes)
Slot Index
10 AB 2
11 1C 20
14 57 2
4–25