Set Watchdog Delay
[cmdchars] = !Q
Description
The Set Watchdog Delay command sets the timeout value for the FieldPoint bank watchdog timer. If the command is addressed to an I/O module, it enables or disables the watchdog for that module. Use the Set Discrete Watchdog Data (!R) command or the Set 16-Bit Watchdog Data (!S) command before using this command.
Syntax
!Q[wdgTmo]
| [wdgTmo] | Four ASCII-hex characters specify the watchdog timeout value. The result of this command depends on the value of [wdgTmo] and on whether the command is sent to a network module or an I/O module. The timeout value in ms is equal to 10 times the value of [wdgTmo]. |
Success Response
A
Command Sent to Network Module
If [wdgTmo] ≥ 20, the watchdog timeout value for the bank is 10 X [wdgTmo] ms and the watchdog is enabled for the bank. If [wdgTmo] = 0, the watchdog is disabled for the bank. If 0 < [wdgTmo] < 20, the command returns an error.
Command Sent to I/O Module
Sending the command to an I/O module does not affect the watchdog timeout value for the bank. If [wdgTmo] ≥ 20, the watchdog is enabled for the targeted I/O module. If [wdgTmo] = 0, the targeted I/O module is unaffected by watchdog timeouts. If 0 < [wdgTmo] < 20, the command returns an error.
If [wdgTmo] is unspecified, the default value is zero and the targeted module is unaffected by watchdog timeouts.
 |
Note This command does not affect watchdog settings for individual channels. If you disable the watchdog for a module and want to enable it again, send this command to the module with a valid [wdgTmo] value. When the watchdog is enabled again for the module, all stored watchdog output values for the module will also be enabled. |
Error Responses
| E_INSUFF_CHARS | Data field error. An insufficient or incorrect number of characters were received for the command. |
| E_INV_LIMS_GOT | Specified limits invalid for the command. |
| E_ILLEGAL_DIGIT | One or more characters in the command could not be properly converted to a digit (hex or decimal). |
| E_NO_MODULE | There is no module at the specified address. |
Refer to FieldPoint Responses for other possible error responses, error numbers, and error descriptions.
Example
>00!Q0015[checksum][cr]
This command sets the watchdog timeout value for the bank to 210 ms and starts the watchdog timer.
>33!Q0021[checksum][cr]
This command enables the watchdog for the I/O module at address 51 (0x33). If output channels on the module have watchdog output values configured, they will output those values in the event of a watchdog timeout.