Hart Retry Count; Hart Number Of Response Preambles; Write Protect; Sub-Device Time Synchronization - GE Masoneilan VECTOR V1100 Instruction Manual

HART Retry Count

This is the number of retries the VECTOR V1100 attempts when communicating as a HART
master to wired-HART devices.
By default, the VECTOR V1100 is configured to use 3 retries. Through the DD, the retry count
can be set to 2, 3, 4 or 5.

HART Number of Response Preambles

This is the number of preambles the VECTOR V1100 uses when responding to HART
commands sent by a HART master (such as a HART communicator or PC with HART modem)
on the wired-HART connection.
By default, the VECTOR V1100 is configured to use 5 preambles. Through the DD, the
response preamble count can be set between 5 – 20 preambles.

Write Protect

This setting allows the configuration inside of the VECTOR V1100 to be write protected. The
write protect setting is controlled through the DD.
By default, the VECTOR V1100 is configured to have write protect disabled.

Sub-Device Time Synchronization

If a HART 7 or greater sub-device is detected and it supports a real-time clock, the VECTOR
V1100 can synchronize the sub-device time with the wireless HART network time if this
setting is enabled. If the sub-device does not support a real-time clock, this setting has no
effect. This synchronization is performed when the VECTOR V1100 joins the wireless HART
network and then once per day.

Sub-Device Scan on Power-up

When this is enabled, the VECTOR V1100 scans the 4-20 mA loop for attached HART devices
on power-up or when the VECTOR V1100 is reset. These are added to the list of supported
sub-devices for the VECTOR V1100 and are communicated with the wireless HART gateway.
Within the DD, Automatic Sub-device detection can be enabled or disabled. It is highly
recommended that this mode always be left enabled.
If this mode is disabled, the host must support scanning for sub-devices in order for any
sub-device to be detected or you must manually execute the Scan for Sub-Devices method.
The list of sub-devices is not retained through a power-cycle or reset of the VECTOR V1100,
so the host would need to detect this and rescan for sub-devices.
25