Datasheet

Ip251_02b_oi_e.doc / Dez-15 Page 24 / 28
*) The serial port of the unit can operate in either “PC mode“ or “Printer mode“.
With PC mode, the unit receives a request string and responds with a
corresponding data string. For details of the protocol see separate description
“SERPRO“.
With Printer mode, the unit sends data without any request and under Timer
control as described subsequently. As soon as the unit receives a character, it
automatically switches over to PC Mode and operates according to protocol.
When for a period of 20 sec. no character has been received, the unit switches
automatically back to “Printer Mode“ and starts cyclic data transmission again.