Control the GPIO and send strings to the second RS232 port
Control the GPIO output lines

turn (pin148 LO)-(Power LED-led0 OFF)
 
turn (pin148 HI)-(Power LED-led0 ON)
turn (pin151 LO)-(led1 ON)
 
turn (pin151 HI)-(led1 OFF)
turn (pin149 LO)-(led3 ON)
 
turn (pin149 HI)-(led3 OFF)

Send strings to the second RS232 port

HARRY

numbers 0 to 9
Type a string to send:

To send ASCI characters (including those up to Decimal 255) type % followed by the Hex value
(e.g. for the Yen sign type %A5 )-----------------See the full ASCI table

but beware sending $00 - the port sends 00 - two zeros rather than one - I am told this is a bug

test the electrickery receive text script