Hi, I have not used a PLC5 for a long time, but sending at text is relatively simple. All you need to do is send a series of ASCII commands (using the AT command set of the modem).
Typically;
'Setup com port parameters
com port settings 19200,N,8,1
'Init
ATE0 <cr>
'Set Text Mode
AT+CMGF=1 <cr>
'Set Number
AT+CMGS="01234567890" <cr>
'Send Message
Message & Chr(26) 'ctrl Z
You should of course check for the correct response after each command i.e. 'OK'. I would connect the modem to a PC first and use something like hyper terminal to test the commands. I assume the PLC com ports can be configured the same way as an SLC where the serial DF1 port can used as plain ASCII port.
