Installation manual

Publication 1747-RM001G-EN-P - November 2008
10-16 ASCII Instructions
The Error bit (ER) is set during the execution of the instruction if:
• the instruction is aborted - serial port is not in User mode.
• the modem is disconnected (control line selection is other than NO
HANDSHAKING).
• the instruction is aborted due to channel mode change.
• the Unload bit (UL) is set. The instruction stops executing, but received
characters are sent to the destination.
• an ACL to clear the receive buffer is executed, removing the ARD
instruction from the ASCII queue.
Timing Diagram for a Successful ARD, ARL, AWA, and AWT
Instructions