Specifications - Omron SYSMAC CS1W-SCB41-V1 Operation Manual

Overview
7-1-2

Specifications

Send/Receive Message Frames for No-protocol Communications
Note
Item
Communications Full-duplex
mode
Messages (commu- Set either of the following types in the Setup Area in the allo-
nications frame cation DM Area.
structure)
1. Data only (without start code and end code)
2. Start code + data
3. Data + end code
4. Start code + data + end code
5. Data + CR + LF
6. Start code + data +CR + LF
Set in allocated DM Area
(The start code can be included by setting to between 00 and
FF hex, and the end code can be included by setting to
between 00 and FF hex. To exclude the end code, set the
number of receive data bytes.)
Start code
End code
Number of
receive data
bytes during
reception
Sending messages • Serial Communications Board: TXD(236) instruction
• Serial Communications Unit: TXDU(256) instruction
Receiving messages • Serial Communications Board: RXD(235) instruction
• Serial Communications Unit: RXDU(255) instruction
Maximum message Sending and receiving: Up to 259 bytes including the start
length code and end code (up to 256 bytes excluding start/end
codes)
Data conversion No conversion
Communications None
protocol
Message delay time When the TXD(236) or TXDU(256) instruction is executed,
after the send delay time, the data is sent from the port.
0 to 300 s (0 to 300,000 ms)
(Can be set in 10-ms units, depending on the DM Area set-
tings)
Receive counter The number of data bytes (0 to 256) received at the port can
be counted.
Reception buffer The reception buffer is cleared immediately after executing the
clear timing RXD(235)/RXDU(255) instruction
Start
Code
No
No
Data
256 bytes max.
Yes
Data
256 bytes max.
1. For multiple start codes, the first start code is enabled.
2. For multiple end codes, the first end code is enabled.
Description
None, or 00 to FF hex
None, 00 to FF hex, or CR + LF
Set the number of receive data bytes between
1 and 256 bytes (according to the DM Area
settings) when frame structure 1 or 2 above is
used.
End code
Yes CR+LF
Data Data
256 bytes max. 256 bytes max.
Data
256 bytes max. 256 bytes max.
Section 7-1
Data
251