5. SETTINGS BEFORE OPERATION
IMS01J02-E2
50
5.4 Communication Requirements
Processing times during data send/receive
The SR Mini HG SYSTEM requires the following processing times during data send/receive.
Whether the host computer is using either the polling or selecting procedure for communication, the
following processing times are required for SR Mini HG SYSTEM to send data:
-Response wait time after SR Mini HG SYSTEM sends BCC in polling procedure
-Response wait time after SR Mini HG SYSTEM sends ACK or NAK in selecting procedure
RKC communication (Polling procedure)
Time (ms)
Procedure details
MIN TYP MAX
Response send time after SR Mini HG SYSTEM receives ENQ
4 7 20
Response send time after SR Mini HG SYSTEM receives ACK
4
−
20
Response send time after SR Mini HG SYSTEM receives NAK
4
−
20
Response wait time after SR Mini HG SYSTEM sends BCC
−
−
1.0
RKC communication (Selecting procedure)
Time (ms)
Procedure details
MIN TYP MAX
Response send time after SR Mini HG SYSTEM receives BCC
4 7 20
Response wait time after SR Mini HG SYSTEM sends ACK
−
−
1.0
Response wait time after SR Mini HG SYSTEM sends NAK
−
−
1.0
Modbus
Procedure details
Time
Read holding registers [03H]
Response transmission time after the slave receives the query message
20 ms max.
Preset single register [06H]
Response transmission time after the slave receives the query message
10 ms max.
Diagnostics (loopback test) [08H]
Response transmission time after the slave receives the query message
10 ms max.
Preset multiple register [10H]
Response transmission time after the slave receives the query message
40 ms max.
Only 1 port uses communication port, and response send time is time at having set interval
time in 0 ms. In addition, in status of the following, there is not communication between a
little.
AT end: About 0.8 seconds
Setting of initial setting item: About 0.8 to 3 seconds