Omron ZEN Communications Manual

SECTION 2 CompoWay/F Communications Protocol
16
2.3 Detailed Description of the Services
■ Read Variable Area
This service reads data from a variable area.
Service Request PDU
Service Request PDU
Note: The read data 12 indicates the weekly timer.
■ Variable Type and Read Start Address
For details on variable types and read start addresses, refer to 3.1
Variable Area (Data Range) List.
Variables of type C0 are read-only.
■ Bit Position
Bits positions are always 00 except for work bits and HR bits. With the
ZEN, bit access supported only for work bits and HR bits.
For details on bits and applications methods, refer to 1-4 Memory Areas
in the ZEN Programmable Relay Operation Manual (Cat. No. Z211).
Note: Refer to Reading Work Bits and HR Bits on page 20 for details on
reading work bits and HR bits.
■ Number of Elements
Always 0001.
■ Response Code
Normal Completion
Error Occurred
MRC SRC
0
222424
101
Variable
type
Read
start address
Bit
position
Number of
elements
MRC SRC
0
22 4
101
Response
code
Read data (for number
of elements)
8 or 12 (See note.)
Response
code
Name Description
0000 Normal completion No errors were found.
Response
code
Error name Cause
1001 Command too long The command is too long.
1002 Command too short The command is too short.

Omron ZEN Specifications

General

Display	LCD
Mounting Type	DIN Rail
Operating Temperature	-10 to 55°C
Power Supply Voltage	100-240V AC
Output Type	Relay, Transistor
Number of Outputs	4-8
Programming Language	Ladder Logic