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6-3
6 No-protocol Mode
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
6-1 Ove
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6
6-1-2 Specifications
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Send/Receive Message Frames for No-protocol Communications
6-1-2
Specifications
Item
Description
Communications
mode
Full-duplex
Messages (commu-
nications frame
structure)
Set either of the following types in the Device Variable for CJ-series Unit for system set-
tings
1. Data only (without start code or 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 Device Variable for CJ-Series Unit for system settings
(With/without a start code, with/without an end code, setting 00 to FF hex for when using a
start code, setting 00 to FF hex for when using an end code, and set the number of receive
data bytes for when not using an end code.)
Start code
None, or 00 to FF hex
End code
None, 00 to FF hex, or CR + LF
Number of receive data bytes
during reception
Set the number of receive data bytes between 1 and 256
bytes using Sysmac Studio or device variables for CJ-
series Unit when frame structure 1 or 2 above is used.
Sending messages
SerialSend instruction
Receiving mes-
sages
SerialRcv or SerialRcvNoClear instruction
Maximum message
length
Sending and receiving: Up to 259 bytes including the start code and end code (up to 256
bytes excluding start/end codes)
Data conversion
No conversion
Communications
protocol
None
Send delay time
When the SerialSend instruction is executed and the send delay time elapses, the data is
sent from the port.
0 to 300 s (0 to 300,000 ms)
(Setting in increments of 10 ms. Set with *_P1_SendDelayCfg and *_ P2_SendDelayCfg
(Send Delay Settings).)
Receive counter
Counts the number of data bytes (0 to 256) received at the port.
Reception buffer
clear timing
SerialRcv instruction: After reading the receive data
SerialRcvNoClear instruction: When the receive data size variable (Size) is set to 0
Start
Code
End code
No
Yes
CR+LF
No
Yes
Data
256 bytes max.
Data
256 bytes max.
Data
256 bytes max.
Data
256 bytes max.
Data
256 bytes max.
Data
256 bytes max.
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...