Rs-232C Units; Communications Cable Connections; Node Address And Baud Rate Settings - Omron DeviceNet CV Series Operation Manual

RS-232C Units

04000 10112
25506
25506
6-2 RS-232C Units
6-2-1

Communications Cable Connections

6-2-2

Node Address and Baud Rate Settings

260
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IOWR
MOV(21)
MOV(21)
END(01)
Note When transmitting explicit messages from an OMRON Master Unit, specify 2
bytes each for the Class ID and the Instance ID.
Response
When data is written properly, the response will be stored as shown in the fol-
lowing table.
Words
DM 0100
DM 0101
DM 0102
DM 0103
The RS-232C Unit is a Special I/O Unit that uses the DeviceNet Network to
exchange I/O between the Master Unit and an RS-232C port. Explicit mes-
sages are used to set the Unit and perform I/O. There are two RS-232C ports
which can be used separately with the RS-232C Unit.
Wire communications cables to the RS-232C Unit using the standard Square
Connectors, just like General-purpose Slaves. This section does not explain
how to connect communications cables. For details on connecting the cables,
refer to 4-2 Connecting Communications Cables to General-purpose Slaves .
This section describes the Slaves' node address setting and baud rate set-
ting. These settings are made using the following pins on the DIP switch.
When IR 04000 turns ON, the CPU Unit will check that
IR 10112 (Unit number 0 Master's Message Commu-
nications Execution Enabled Flag) is ON, and mes-
#00FE
sage transmission will start.
DM1000
00FE: Master's node address 00, Master's unit ad-
dress FE Hex
#0019
DM 1000: Command data storage words
0019 Hex: Master's unit number 00, 19 command data
words (BCD)
#0000
If the Equals Flag is ON (writing to the Master has
040
been completed normally), IR 04000 will be cleared
(message transmission completed).
#0001 If the Equals Flag is OFF (error in writing to the Mas-
ter), IR 04000 will be turned ON, and the data will be
040
transmitted again.
Contents (Hex)
28 01 EXPLICIT MESSAGE SEND command
code is 28 01 Hex.
00 00 Response code is 0000 Hex (normal
completion).
00 02 Number of bytes received (data length
from word DM 0103 onwards) is 2 bytes.
07 9E Slave node address is 07.
BYTE DATA READ response service
code is 9E Hex.
Section 6-2
Meaning