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3 SPECIFICATIONS
Table 3.22 Details of the expected packet rate and production inhibit time
Polling
Bit strobe
Change-of-state
Cyclic
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POINT
(1) Write "0" in the unnecessary parameter area when creating a parameter.
Otherwise, an error may occur if the previous data remains.
(2) Because of the limited number of writes of the flash ROM, execute the save
parameter to flash ROM request (Y17) only when creating a new parameter or
changing a parameter.
Expected packet rate
(1) Sets the communication watchdog timer value for the
slave node. When the communication between the
master node and the slave node stops for the duration
represented by "value of this setting
node executes the operation specified by the Watchdog
Timeout Action.
(2) When the value of the expected packet rate setting is not equal to 1, i.e., when the expected packet rate is not equal to 0
ms, the expected packet rate must be equal to or greater than the production inhibit time.
(3) When the value of this setting = 1, i.e., when the expected
packet rate = 0 ms, the watchdog timer monitor function
is invalid.
(1) Sets the communication watchdog timer value of the
slave node. When the communication between the
master node and the slave node stops for the duration of
this setting, the slave node executes the operation
specified by the Watchdog Timeout Action.
(2) When the value of the expected packet rate setting is not equal to 1, i.e., when the expected packet rate is not equal to
0ms, the expected packet rate must be equal to or greater than the production inhibit time.
(3) When the value of this setting = 1, i.e., when the expected
packet rate = 0 ms, the watchdog timer monitor function
is invalid.
(1) Sets the communication watchdog timer value for the
slave node. When the communication between the
master node and the slave node stops for the duration
represented by "value of this setting
node executes the operation specified by the Watchdog
Timeout Action.
(2) When the value of the expected packet rate setting is not equal to 1, i.e., when the expected packet rate is not equal to 0
ms, the expected packet rate must be equal to or greater than the production inhibit time.
(1) Specifies the interval of data transmissions from the slave
node to the master node.
(2) When the value of the expected packet rate setting is not equal to 1, i.e., when the expected packet rate is not equal to 0
ms, the expected packet rate must be equal to or greater than the production inhibit time.
(3) When the setting value = 1, i.e., the expected packet rate
= 0 ms, the setting is inhibited.
(1) Minimum transmission interval of the slave node = Sets
the minimum time that the slave node can prepare the
transmission data. The master node transmits the polling
4," the slave
request to the slave node according to this time interval.
(1) Minimum transmission interval of the slave node = Sets
the minimum time that the slave can prepare the
transmission data. The master node transmits the bit
strobe request to the node according to this time interval.
(3) This value has to be the same for all bit strobe
connections.
(1) Sets the minimum time when the slave node can receive
data.
4," the slave
(1) Specifies the interval of data transmissions from the
master node to the slave node.
(3) When the setting value = 1, i.e., the production inhibit
time = 0 ms, the setting is inhibited.
MELSEC-Q
Production inhibit time
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