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Appendix 3 DN211A
In DN211A, the function enhancing old model DN211 and the problem are corrected.
A. Feature of DN211A
A-1 DN211A has passed ODVA conformance test
A-2 Compatibility with old model DN211
(a) DeviceNet communication function
It has not changed with old model DN211 (polling instruction / response mode and bit strobe
instruction / response mode are supported).
(b) The communication memory map between T2E/T2N and DN211A
It has not changed with old model DN211.
(c) Station status
A bit 0 displays network power supply normal / abnormal in DN211A. (In old model DN211,
it was a "reservation bit" )
ON : Network power abnormal
OFF: Network power normal
(d) Parameter setting request (slave device)
In specifing scan type of slave device, "the mix of polling and bit strobe" was available at old
model DN211, but this specification is stopped using in DN211A.
This is because the slave which uses the mix of polling and a bit strobe does not exist.
(e) Operation mode control request
Although the bit 4 was "transmission start / stop bit" in old model DN211, this bit does not
influence operation of DN211A even if it is operated .
In DN211A, if it becomes the run mode and it will become the "transmission start", if it
becomes the standby mode and it will become "transmission stop."
However, In DN211A, ON/OFF of bit 4 is reflected in the bit 4 of station status for
compatibility with the radder program of old model DN211.