22.11.3.6 Standby Reception

Stays in standby receive mode until it receives specified text. After the timeout period has expired, Bit 4 (Receive time-out error) of Status [s: EXT_SIO_STAT] is set. The timeout duration can be set in 100 millisecond increments.
The system is in standby receive mode until it receives the character string or character code specified with Parameter 2. Configure the timeout duration with Parameter 3.
It can only be used in an Extended Script.

IO_READ_WAIT([p:EXT_SIO], Text, Time-out)