Owner`s manual

M SERIES DAC
BASE UNIT AND MODULE OPERATION
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message sent is the oldest message in the buffer. This command has the following
format: RSn<cr> where n is the desired port number (1 to 4 or 0 for all). If there are
no messages in the buffer for the specified port(s), the module responds with <cr>.
STOP REPORT (SR) COMMAND
The Stop Report (SR) command instructs the V74/V75/V87 module to stop sending
messages or data after an RA or RB command has been issued. You can instruct the
module to resume sending messages or data by issuing the desired request for
messages or data command (RA, RB, or RS). This command has the following
format:
SRn<cr> where n is the desired port number (1 to 4 or 0 for all).
PORT ID STATUS (ID) COMMAND
The Port ID Status (ID) command instructs the V74/V75/V87 to report its current
Port ID status for the selected module. This command has the following format:
ID<cr>. When a user sends the ID command, a status message similar to the
following is sent:
Unit 01, Module 02 Port I.D
Port 1=01:02,1
Port 2=01:02,2
Port 3=01:02,3
Port 4=01:02,4
This message is sent for an I/O module installed in Unit 1 as Module 2 using the
default Port ID settings.
BROADCAST MODE
The 4-port peripheral communications modules (e.g., V74) supports a "broadcast"
mode where any data received by the host module is sent out all four ports of the
selected module(s) simultaneously. A 4-port serial module is placed into broadcast
mode by sending the port select code (default - $BT), capital "B", the desired module
number(s), and <cr> to the host module. To place all peripheral communications
modules into broadcast mode, send $BTB<cr>.
If you wish to place multiple 4-port serial modules into broadcast mode, each module
number should be separated by a comma. For example, to place three V74 modules
installed as Module 2, Module 3, and Module 4 into broadcast mode using the default
port select code, send the command $BTB2,3,4<cr> to the host module. The 4-port
serial module remains in broadcast mode until the host module issues a disconnect
command consisting of the port select code followed by <cr> (e.g., $BT<cr>).