7-38
Timing of Data Communication
• In case of RS485 (RS232 to follow)
Caution
Above time represents a period from the rising edge of the stop bit.
T3
0 to 2 ms
0 to 2 ms
0 to 2 ms
0 to 2 ms
0 to 2 ms
0 to 2 ms
0 to 2 ms
0 to 2 ms
T3
T4
Enquiry for transmission
Permission for
transmission
ACK/
NAK
Data block
Enquiry for
transmission
Permission for
transmission
ACK/NAK
Data block
T5
T4
T3
T3
T5
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
Protocol parameter T6
2 ms
Maximum
Protocol parameter T1
Protocol parameter T2
Protocol parameter T2
4. Communication
Specifications
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