Baumer IDC200 - Handshake with Acknowledgement

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V1.0 | IDC200 Operating Manual 25
3.3.1.1.2 Handshake with acknowledgement
With every transmission of new data, the transmitter will increase the handshake count. Re-
ceiver returns the received handshake count to transmitter as HS-Ack. Transmitter will not
transmit new data until having received the acknowledgement (with increased handshake
count). This mode will reduce the amount of data transferred per time period.
General handshake routine with input data confirmation by PLC (status, result data):
1. PLC activates the handshake (outbound input data handshake activated in HS-I mode, bit 0
= 1, bit 1 = 1).
2. Sensor confirms handshake activation (inbound confirmation of activated handshake input
data in HS-I mode, bit 0 = 1, bit 1 = 1).
3. Sensor will increase input data handshake count with every new data transmission and
awaits acknowledgement of receipt (HS-Ack). Any further data for transmission will be held
in pipeline.
4. Count up of handshake input data will make PLC recognize arrival of new data for process-
ing. By doing so, sensor acknowledges data receipt by returning HS-Ack.
5. The acknowledged HS count (outbound HS Ack) informs the sensor that the transmitted
data were received and the sensor will transmit another data.
General process flow of handshake with PLC output data acknowledgement (control, parame-
ters, trigger data):
1. Handshake activated by PLC (outbound handshake of output data in HS-I mode, bit 0 = 1,
bit 1 = 1).
2. Sensor acknowledges handshake activation (inbound handshake acknowledgement of acti-
vation for output data in HS-II mode, bit 0 = 1, bit 1 = 1).
3. With every new data transmission, the PLC increases the output data handshake count and
awaits the acknowledgement of receipt(inbound HS-Ack). Any further data ready for trans-
mission will be held in pipeline or can be deleted.
4. By the increased output data handshake count the PLC recognizes receipt of new data for
processing. By doing so, the sensor acknowledges data receipt by returning the received
handshake count (HS-Ack).
5. By the inbound acknowledgement (HS-Ack of output data), the PLC recognizes data receipt
and would transmit another data package.