Read From Variable Area (Mrc = "01", Src = "01") - Omron E3X-DRT21 Operation Manual

CompoWay/F Message Communications
4-5-3

Read from Variable Area (MRC = "01", SRC = "01")

Command Block
78
The end code is 14 (format error).
Example 3: Node Number Missing
Command Block
STX
02 Hex
The node number is missing one character.
Response Block
There is no response.
Example 4: No Sub-address and Incorrect BCC
Command Block
STX Node number
02 Hex
Response Block
STX Node number
02 Hex
The sub-address is 00 and the end code is 13 (BCC error).
This service reads from the variable area.
Item
Read Status
Read Incident
Light Level
(See note 1.)
Read ON Inci-
dent Light
Level
(See note 2.)
Read OFF
Incident Light
Level
(See note 2.)
Note 1. An error will occur if the Read Incident Light Level command is sent with
the unit number of an E39-TM1 Terminal Block Unit.
2. An error will occur if the Read ON/OFF Incident Light Level command is
sent with the unit number for a Unit other than the E3X-DA6-P.
The following diagram shows the command text in the CompoWay/F com-
mand block.
ETX BCC
03 Hex
ETX BCC
03 Hex Err
Sub-address
"0" "0"
Description Variable
type
Reads status of "81"
Sensors.
Specifies unit num- "82"
ber in read start
address and reads
incident light levels
for the specified
number of elements.
Specifies unit num- "83"
ber in read start
address and reads
ON incident light lev-
els for the specified
number of elements.
Specifies unit num- "84"
ber in read start
address and reads
OFF incident light
levels for the num-
ber of elements.
Section 4-5
End code ETX
"1" "3" 03 Hex
Read Bit
start position
address
"0000" "00"
Unit num- "00"
ber
Unit num- "00"
ber
Unit num- "00"
ber
BCC
Number
of
elements
"0001"
"0001" to
"0010"
"0001" to
"0010"
"0001" to
"0010"