IDEC FC6A-C16K1CE Communications Manual page 84

5: U C
SER OMMUNICATION
Conversion Type
The BCC calculation result is converted or not according to the designated conversion type as described below:
Example: BCC calculation result is 0041h.
(1) Binary to ASCII conversion
0041h
D0010:
(2) No conversion
0041h
D0010:
BCC Digits (Bytes)
The quantity of digits (bytes) of the BCC code can be selected from 1 or 2.
Example:
(1) BCC digits = 2
(2) BCC digits = 1
D1 (Destination 1)
Set an internal relay or an output for the transmit completion output.
When the start input for a TXD instruction is turned on, preparation for transmission is initiated, followed by data transmission.
When this sequence of operations is complete, the transmit completion output is turned on.
D2 (Destination 2)
Set the data register in which to store the transmit status and the transmit data byte count.
The transmit status is stored in D2+0 and the transmit data byte count is stored in D2+1.
Data registers D0000 through D7998 and D10000 through D55998 can be set.
D2+0 (Transmit Status)
Transmit
Status Code
16 Preparing transmission
32 Transmitting data
48 Data transmission complete
64 Transmit instruction complete
If the transmit status code is other than shown above, a transmit instruction error is suspected. See "User Communication Error"
on page 5-43.
5-8
I
NSTRUCTIONS
Binary to ASCII conversion
No conversion
"4" "1"
(34h) (31h)
"4" "1"
(34h) (31h)
Status
FC6A S M S A
ERIES ICRO MART
ASCII Data
"4" "1"
(34h) (31h)
2 digits
ASCII Data
NUL "A"
(00h) (41h)
2 digits
ASCII Data
"1"
"4"
(34h) (31h)
"1"
Lower digit
(31h)
From turning on the start input for a TXD instruction, until the transmit data is
stored in the internal transmit buffer
From enabling data transmission by an END processing, until all data transmission
is completed
From completing all data transmission, until the END processing is completed for
the TXD instruction
All transmission operation is completed and the next transmission is made possible
- -O T C
LL IN NE YPE OMMUNICATION
Note: On WindLDR, Modbus ASCII is defaulted to
binary to ASCII conversion.
Note: On WindLDR, Modbus RTU is defaulted to no
conversion.
Note: On WindLDR, Modbus ASCII and Modbus RTU
are defaulted to 2 digits.
Description
M FC9Y-B1730
ANUAL