Allocation Dm Area For No-Protocol Mode - Omron SYSMAC CS1W-SCB41-V1 Operation Manual

Allocation DM Area for No-protocol Mode

Note
7-2 Allocation DM Area for No-protocol Mode
Setup Area Words
252
3. If the end code will overlap with the send/receive data and cause data re-
ception to be interrupted, use CR+LF as the end code.
4. If the send delay is set in the allocation DM Area when sending TXD(236)
or TXDU(256) (no-protocol mode), data will be sent when the send delay
time has lapsed after execution of TXD(236) or TXDU(256), as shown be-
low.
Send delay
Send
TXD(236)
For details on the TXD(236), RXD(235), TXDU(256), and RXDU(255) instruc-
tions, refer to the CS/CJ-series Instructions Reference Manual (W340).
5. If a no-protocol instruction is sent to a pre-Ver. 1.2 Board/Unit or the serial
port of a Board/Unit with Unit Ver. 1.2 or later using a serial communica-
tions mode other than no-protocol mode, the following operations will oc-
cur.
• If TXD(236)/RXD(235) is sent to the Board, Auxiliary Area bit A424204
(Inner Board Service Failure Flag) will turn ON.
• If TXDU(256)/RXDU(255) is sent to the Unit and the serial communi-
cations mode is set to protocol macro, NT Link, loopback test, or Serial
Gateway mode, an undefined command error (end code: 0401 hex)
will be returned.
If the serial communications mode is set to Host Link mode and the in-
struction will be converted to a slave-initiated function FINS command
and transferred. (Depending on the remote device, a response timeout
(end code: 0205 hex) is likely to be returned.)
Do not program TXD(236)/RXD(235) instructions addressed to the serial port
(port 1/2) of the Serial Communication Board in both cyclic tasks and interrupt
tasks. If an interrupt task occurs during execution of a TXD(236)/RXD(235)
instruction addressed to the serial port (port 1/2) of the Serial Communica-
tions Board within a cyclic task, the TXD(236)/RXD(235) instruction
addressed to the serial port (port 1/2) of the Serial Communications Board
within the interrupt task will not be executed. An error will occur and the ER
Flag will turn ON. (This operation is also not possible in both cyclic tasks and
interrupt tasks for any combination of the TXD(236)/RXD(235) instruction and
ports 1/2.)
This section describes the Setup Area allocated to the Serial Communications
Board and Serial Communications Units in the DM Area when no-protocol
communications are used.
The Serial Communications Board and Serial Communications Units use the
following words as a Setup Area in the DM Area when no-protocol communi-
cations are used. The words allocated to the Serial Communications Board
are different from those allocated to the Serial Communications Units (which
are allocated words according to the unit numbers).
Time
Section 7-2