Toshiba ICC Multiprotocol Ethernet Interface ASD-G9ETH User Manual download pdf (Page 38)

100

ICC

10.7.4 Timeout Configuration

The interface can be configured to

perform a specific set of actions

when network communications are

lost. Support for this feature varies

depending on the protocol: refer to

the protocol-specific section of this

manual for further information.

There are two separate elements

that comprise the timeout

configuration (refer to Figure 29):

• The timeout time

• The timeout configuration array

The timeout time is adjustable

from 1 to 4294967295 (2

-1)

seconds. This time setting is used by certain protocols in order to determine

abnormal loss-of-communications conditions and, optionally, to trigger a

timeout processing event. The default timeout time is 10s.

The timeout configuration array allows up to 10 register/value pairs to be

designated by the user. When a timeout event is triggered by a protocol, the

timeout configuration array indexes are parsed. If the “register” field for an

index is set to 0, then this index is “disabled” and therefore ignored. If, on the

other hand, the “register” field is non-zero, then the value contained in the

“value” field is automatically written to the designated register. This flexible

mechanism allows up to 10 designated drive registers to have their own unique

“fail-safe” conditions in the event of a network interruption.

For example, Figure 29 shows a timeout time of 10s, and one timeout entry

assignment. If a protocol that makes use of timeout processing triggers a

timeout event, then a value of 5000 will automatically be written to drive register

1008 (the frequency command). Provided the drive has a valid “run” command

and is currently configured to use the network frequency command as its

master frequency command, it will ramp to 50.00Hz.

If timeout/failsafe processing is not desired, just set the “register” fields for all

indexes to 0 (disabled). This is the default condition.

“DEC” and “HEX” selection buttons are also available, and allow changing the

“value” column data display and entry radix between decimal and hexadecimal

formats, respectively. These buttons provide the ability to interact with the

various drive registers in their most natural radix (e.g. a hexadecimal command

word vs. a decimal frequency command value).

Figure 29: Timeout Configuration

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