3-1
Overview and Specifications of RS-422-A/RS-485 Interface
3
3.1
Description of Functions
Listener and Talker Functions
Listener Function
This allows almost all settings except power on/off and operation control.
• Settings except communication settings.
• Operation control except power on/off.
• Call-up of setting data
• Specifying of output data (specifying of channel numbers or output data types)
Talker Function
The following data can be output:
• Measured data
• System configuration
• Data for operation mode setting
• Data for setup mode setting
For measured data, binary output or ASCII output can be selected. (for RS-422-A with using the
multi point.) Other data are output in the form of ASCII data.
Data Output
When trigger(GET) becomes activated DR will store the new data in a buffer. When an output
request such as the FM command is received, these new data will be output.
Commands Applicable to RS-422-A/RS-485 Only
The following commands are only applicable to RS-422-A/RS-485.
ESC O
Open Command (address a communication destination)
Setting
ESC O xx<terminator>
xx : address, 01 to 31
Description
Specifies the communicating device by its address. When this command is ex-
ecuted, all commands to the DR series (including ESC T) become effective.
• Only one device can be opened.
• Executing ESC O automatically closes all opened devices.
• When the DR series receives this command correctly, it sends “ESC O xx” in
response to the computer.
• CR+LF can only used for the terminator.
ESC C
Close Command (close the addressed state of a device)
Setting
ESC C xx<terminator>
xx : address, 01 to 31
Description
Disconnects the device currently connected. When this command is executed, it
allows opening communication with other devices with the ESC O command.
• When the DR series receives this command correctly, it sends “ESC C xx” in
response to the computer.
• CR+LF can only used for the terminator.
The following commands are same as the RS-232-C interface. Refer to User’s Manual shown
below.
ESC T (Trigger Execution), ESC S (Status Output Command)
Note
• ESC corresponds to hexadecimal code (1B)H. On the N88-BASIC, “ESC x” is denoted as “CHR$(&H1B)+”x”.”
Summary of Contents for DR130 SERIES
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