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4.3 Requests to the DN611B
Unified Controller nv Series DeviceNet Module DN611B Instruction Manual
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4.3.5
Operation mode control request
1) Function
This request is used to specify an operation mode for the DN611B module. It is valid if the DN611B is in neither
down mode nor initialize mode. Run mode (transmission enabled) is available only when the DN611B is in
standby mode and has its local node parameters set. When the DN611B is set in run mode, slave device data
is allocated to the input/output data areas.
2) Diagrammatic representation (Function block)
DN_MODE
REQ
DONE
CH
ERR
UNIT
STATUS
SLOT
SPEC
Input parameters Output parameters
REQ BOOL type Execution enabled DONE BOOL type Completed
CH WORD type Channel No. ERR BOOL type Error
UNIT WORD type Unit No. STATUS WORD type Completion status
SLOT WORD type Slot No.
SPEC WORD type Operation mode
specifying information
See [4.5 Completion Status] for the contents of the completion status.
3) Description of operation
a)
When REQ is TRUE, the DeviceNet module specified by CH, UNIT, and SLOT executes the operation
mode control request.
b)
After completion of operation mode control request processing, DONE is turned TRUE.
c)
If operation mode control request processing is not completed in 2 seconds or more due to an error or
the like, ERR and DONE are turned TRUE.
d)
Completion status is output to STATUS.
e)
If REQ is FALSE, both DONE and ERR turn FALSE.
f)
When this function block is started (when REQ is turned TRUE), keep REQ TRUE till DONE becomes
TRUE.