4.6 Data format of reply packet
The format of the reply packet is shown in Figure 4.9.
4.7 Reply packet in case of communication error
1) Parity error
2) Frame error
3) Timeout (see Section 4.1)
(e.g. The target output module is not working by GI.)
Error code
(Decimal)
0
1
2
3
224
4
5
6
256
8449
(e.g. Transmitting the write command at the time when the protection of write command is enabled.)
Error description
No corresponding command
The argument outside settable range is specified.
(e.g. Specifying the argument exceeding 120% of the rated output voltage.)
Arguments are inconsistent.
(e.g. Specifying the lowest value which is higher than the highest value.)
If the following hardware error occurs, any reply packet is not transmitted because the slave
cannot recognize the command packet.
Figure 4.9 Data format of reply packet
Identifier information: when the communication is normal, the command value in Frame 0 of the
command packet is returned.
(1) Hardware error
An Extended-UART reply packet consists of the address information, the identifier information, the
checksum, and the return value.
5
6
(e.g. The command is receieed before the process is completed.)
The command to the empty slot is transmitted.
(e.g. The empty slot is selected.)
9
7
8
(2) Software error
If the command packet sent from the master had errors, the reply packet indicating an error is
transmitted.
Identifier information: 11111b(5bit)
Return value : Error code as shown in Table 4.2
Table 4.2 Error codes
No.
1
2
3
4
The specified command is not valid.
The state of the internal process is busy.
The command that do not correspond to the setting target is transmitted.
(e.g. The command to monitor the output voltage is transmitted to the front-end module.)
Checksum mismatch
Internal communication error
Applications manual
For AME series
7
6
5
4
3
2
1
0
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
return value16bit)
Frame0
Frame1
Frame2
Frame3
Frame4
Address
Indentifier
infomation
(5bit)
Address
Check
sum
Address
Address
Address
8
ver1.1E 2020.2.12
