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7.2.5 Access to Function Codes
(1) Request for access to function codes (from master to inverter): o31=104
This instance is provided to read or write function codes from/into the inverter.
Instance
byte
bit 7
104
0
X6
1
RST
2
User-defined function code 1 (write) (lower byte) (data of function code specified by o40)
3
User-defined function code 1 (write) (upper byte) (data of function code specified by o40)
4
Access to function code (number)
5
Access to function code (group)
6
Access to function code (write data: lower byte)
7
Access to function code (write data: upper byte)
FWD:
1 = Run forward command
REV:
1 = Run reverse command
X1 to X9:
Communication terminal block command
(The terminal function is specified by E01 to E09).
XF, XR
Communication terminal block command
(The terminal function is specified by E98 and E99).
RST:
1 = Reset the alarm (fault) condition.
Access Code:
00, 11 = Disable, 01 = Read function codes from inverter,
10 = Write function codes into inverter
User-defined function code 1:
Access to function code (number):
Access to function code (group):
Access to function code (write data): Data to write into function code specified by bytes 4 and 5
* Whether the inverter has terminals [X8] and [X9] depends upon the product specifications of the FRENIC-MEGA
inverter. For details, refer to the FRENIC-MEGA Instruction Manual, Chapter 5 "FUNCTION CODES."
Assigning any of communication-dedicated function codes S01, S06, and S19 to inverter's
function code o40 enables bytes 2 and 3 of "Request for access to function codes" instance to
specify speed.
Communication-dedicated function code S06 cannot be assigned to bytes 4 and 5. Instead, use
bytes 0 and 1 that have the similar function.
For details about communication-dedicated function codes (S, M, W, X and Z codes), refer to the
RS-485 Communication User's Manual, Chapter 5, Section 5.2 "Data Formats."
(2) Response to request for access to function codes (from inverter to master): 032=105
This instance is provided to verify the read/write result of function codes.
Instance
byte
bit 7
105
0
VL
1
BUSY
2
User-defined function code 1 (read) (lower byte) (data of function code specified by o48)
3
User-defined function code 1 (read) (upper byte) (data of function code specified by o48)
4
Access to function code (number)
5
Access to function code (group)
6
Access to function code (read data/error code: lower byte)
7
Access to function code (read data/error code: upper byte)
ACK:
ERR:
bit 6
bit 5
X5
X4
X3
XR
XF
Access Code
Specify the data of function code previously specified by o40
(For details about how to specify data, refer to Section 7.2.4 "User
Defined Assembly Instance.")
Numeral component of function code to access
Type of function code to access (listed in Table 7.2)
bit 6
bit 5
TL
NUV
BRK
ERR
ACK
RL
1=Normal response to write/read request
1=Abnormal response to write/read request
(Error code output to bytes 6 and 7)
22
bit 4
bit 3
bit 2
X2
X1
X9 *
bit 4
bit 3
bit 2
INT
EXT
ALM
DEC
bit 1
bit 0
REV
FWD
X8 *
X7
bit 1
bit 0
REV
FWD
ACC
IL
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