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4.6.2 Reset Request
(1) The Function
This request is used for resetting the DN211 from theT2/T2E/T2N. When receiving a reset request,
the DN211 executes initialization of the module. This request also can delete the scan list
(parameters of the slave devices being linked to the network) saved in the internal non-volatile
storage of the DN211.
During normal operation:
When a reset request is executed, the DN211 turns waiting for a parameter setting request
(standby mode). No response will be made to the T2/T2E/T2N when a reset request is completed
successfully. To confirm successful completion of the reset request, check the station status
(05D5H) for transiting from "initialize mode" to "standby mode."
When in abnormal state:
An error response (completion status) will be returned to the T2/T2E/T2N when the request is not
accepted.
Reset request Reset completion
INZ bit (14 bits)
STBY bit (12 bits)
NCOIN bit (6 bits)
(when clearing the scan list)
Station status 4000H 2000H/2040H
Figure 4.12 Station Status Operation on Reset Request
(2) The Data Part Format
a) Request
Request area
0334H Request code (0011H)
0335H Scan list clear 0: Don't clear it / 1: Clear it
b) Acknowledgement (only for abnormal state)
Acknowledgement area
02D0H Request code (0011H)
02D1H Completion status
See "4.7 Completion Status" for the above completion status.
(3) Execution Time: Since the T2/T2E/T2N writes "1" in the request register until the station status
changes to "2000H/2040H" from "4000H"
• When the scan list is found in the non-volatile storage: Scan list is not cleared... Approx. 1 second
Scan list is cleared ... Approx. 9 seconds
• When no scan list is found in the non-volatile storage: No scan list cleared ... Approx. 9 seconds
Scan list is cleared ... Approx. 9 seconds
(4) Others
• The 7-segment LED goes out during initialization processing after a reset request is accepted.
• Startup time takes approx. 9 seconds after switching ON the power when no scan list is found in
the non-volatile storage.
CAUTION