Toshiba T2 User Manual
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4.6.5
Operation Mode Control Request
(1)
The Function
Specifies the operation mode of the DN211 module. When the DN211 is neither in down mode nor
initialize mode, a request is enabled. Run mode (transmission enabled) is available only when the
DN211 is in standby mode and the local node parameters are set. When the DN211 is set to run
mode, slave device data will be allocated to the input/output data area.
initialize mode, a request is enabled. Run mode (transmission enabled) is available only when the
DN211 is in standby mode and the local node parameters are set. When the DN211 is set to run
mode, slave device data will be allocated to the input/output data area.
(2)
Data Part Format
a) Request
Request area
0334H
Request code (0013H)
0335H
Specified information
Specified information: "1" has some meaning.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
STBY
BITS
START
RUN
POLL
SYNC
Figure 4.13 Composition of Specified Information Bits
Table 4.16 Meaning of Specified Information Bits
BIT
Name
Description
13
STBY
Standby request: changes from run mode to standby mode.
12
RUN
Run request: changes standby mode to run mode.
10
BITS
Bit strobe mode transmission enabled
9
POLL
Polling mode transmission enabled
4
START
1: Polling and bit strobe transmission start 0: Stop transmission
3
SYNC
T2/T2E/T2N
⇔
DN211 transfer mode
…
1: Synchronous 0: Asynchronous
b) Acknowledgement
Acknowledgement area
02D0H
Request code (0013H)
02D1H
Completion status
See "4.7 Completion Status" for above completion status.
(3)
Others
•
The following combinations of requests are forbidden..
¬
standby request and run request are requested simultaneously.
-
The already running mode (standby/run) is requested
•
See the station status for the actual mode change confirmation.
•
When you are changing BIT 10, 9, 4, or 3, first change to standby mode before requesting a run
request and a new setting.
•
When BITs 10, 9, 4, and 3 are set to "1", no standby request is allowed.