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[Supplement]
Supplement
Timing of Data Communication
• In case of RS485 (RS232 to follow)
T3
0 – 2ms
0 – 2ms 0 – 2ms0 – 2ms 0 – 2ms
0 – 2ms0 – 2ms 0 – 2ms
T3T4
Enquiry for transmission
Permission for
transmission
ACK/
NAK
Data block
Enquiry for
transmission
Permission for
transmission
ACK/NAK
Data block
T5 T4
T3 T3T5 T4 T5
Host to driver
Driver to host
RS485 bus
occupation
Host to driver
Driver to host
RS485 bus
occupation
Symbol
T3
T4
T5
Title
Continuous inter-character time
Response time of driver
Response time of host
Minimum
Stop bit length
4ms
2ms
Maximum
Protocol parameter T1
Protocol parameter T2
Protocol parameter T2
<Caution>
Above time represents a period from the rising edge of the stop bit.