IDEC MicroSmart - Manual (Page 439)

27: M ODEM M ODE
« FC4A M ICRO S MART U SER ’ S M ANUAL » 27-13
Sample Program for Modem Answer Mode
This program demonstrates a user program for the modem answer mode to move a value to a data register assigned to the
modem mode and initialize the modem. While the telephone line is connected, user communication instruction RXD2 is
executed to receive an incoming communication.
The RXD2 instruction is programmed using WindLDR with parameters shown below:
Source S1: Data register D10, No conversion, 2 digits, Repeat 10
M8120 is the initialize pulse special internal relay.
When the MicroSmart star ts to run, M8055 is turned on to send
the initialization string for the modem answer mode.
The MOV instruction stores 1 to D8103 to enable user protocol
after telephone line is connected.
M8077 (line connection status) is on while telephone line is con-
nected.
RXD2 receives incoming communication and stores received data
to data registers star ting with D10.
M8120
M8120
REP S1 –
1
D1 –
D8103
MOV(W)
M8077
D2
D0 S1
20 D1
M0
RXD
2
M8055