Omron E3X-CIF11, Operation Manual

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CompoWay/F Message Communications Section 4-5
4-5 CompoWay/F Message Communications
Sending CompoWay/F messages from the master to the Communication Unit
allows reading and writing parameters of a specified Fiber Amplifier Unit. The
Communication Unit processes the commands sent by the master and
returns responses.
4-5-1 CompoWay/F Services: Command Text
CompoWay/F allows the following services to be specified using the com-
mand text. The service is defined in the command text using the MRC (Main
Request Code) and SRC (Sub-request Code) at the beginning of the com-
mand text.
4-5-2 Command and Response Formats
The formats of command and response blocks for CompoWay/F messages
are shown here. Numeric values followed by Hex, such as 02 Hex, indicate
hexadecimal values. Numeric values in double quotation marks, such as “02”,
or without any other indication are ASCII values.
Command Block
MRC SRC Service name Processing
“01” “01” Read from Variable Area Reads data from the variable area.
“02” “01” Read from Parameter
Area Reads data from the parameter area.
“02” “02” Write to Parameter Area Writes data to the parameter area.
“05” “03” Read Unit Attributes Reads model and version information.
“06” “01” Read Controller Status Reads the operation status of the con-
troller.
“08” “01” Echoback Test Performs an echoback test.
“30” “05” Operation Command Sends an operation command.
02 Hex
(fixed)
(Text)
(
™
10
1
) (
™
10
0
)
“00”
(fixed)
“0”
(fixed)
1 byte
MRC
SRC
03 Hex
(fixed)
2 bytes 2 bytes 1 byte 1 byte 1 byte
STX
Node number Sub-address
SID
Command text ETX BCC
BCC calculation range