Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 91)

Parallel Port Communications 7–11
Publication 2706-6.1
Send Message to Slave Address Selected as a Message Attribute
To send a message to a slave, Port Use of the RS-485 or RS–232 port
must be set to DL Slaves.
If the message’s Print attribute is set, the message will be printed
once for each time it is displayed or redisplayed. Set the Port Use for
the RS–232 port to Printer.
In the Message List Run Mode, messages are continually being
displayed by the DL40 Plus. Messages can be added to or deleted
from the message list while the list is running. In addition, Priority
Message Numbers can be sent to override the message list.
In Message List Run mode, the 4 strobe lines specify an instruction
to be performed.
MS3 MS2 MS1 MS0 Data Type
x x 0 0 null
x x 1 0
D0–D15 contain a message number to add
to list.
x x 0 1 D0–D15 contain the number of a Priority
Message.
x x 1 1 D0–D15 contain a message number to
delete from list.
x = Ignored