1. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  2. SGD Command Reference
  3. mqtt.conn[1|2].retry_interval_random_max
  • ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
mqtt.conn[1|2].retry_interval_random_max

mqtt.conn[1|2].retry_interval_random_max

This command specifies the maximum random retry interval to attempt a connection to an MQTT broker when the connection is lost. This command prevents a fleet of printers from attempting to connect to a single broker after a network interruption that might cause denial of service (DOS) concerns. The interval is measured in seconds.

Setvar

To set the maximum random retry interval for connection 1 or 2:
! U1 setvar "mqtt.conn1.retry_intreval_random_max" "value"
! U1 setvar "mqtt.conn2.retry_intreval_random_max" "value"
Value
A numeric value between
"1"
 and
"600"
 seconds.
Default
"120"

Getvar

To have the printer return the current maximum random retry interval for connection 1 or 2:
! U1 getvar "mqtt.conn1.retry_intreval_random_max"
! U1 getvar "mqtt.conn2.retry_intreval_random_max"
The printer returns a numeric value between
"1"
 and
"600"
 seconds.