Field Device Development
Character Time is based on Baud Rate. HART characters consist of 11 bits. For 1200 Baud networks, the character time is as follows:
1200 Baud = ...
Fri, 11 Nov, 2016 at 12:54 PM
If the HART device receives Command 6 with an invalid Loop Current Mode value, the device MUST NOT change its Polling Address and give a Response Code ...
Wed, 12 Oct, 2016 at 1:44 PM
Device Family Commands are discussed in the following documents: Command Summary Specification (SPEC-099, FCG TS20099), sections 6, 7.1, Table 9, 8.3, 8...
Thu, 27 Oct, 2016 at 4:02 PM
When the Burst Timer countdown reaches zero, the device should burst (publish) the latest available data. The buffer of measurements to burst is refreshed...
Tue, 8 Nov, 2016 at 4:04 PM
Burst-Timer(BT) is used by a Burst-Mode HART Device to trigger the transmission of a BACK. When BT lapses (i.e., reaches 0) a BACK is
transmitted.
Tue, 8 Nov, 2016 at 4:10 PM
BACK (Burst Acknowledge) is the HART slave message transmitted to a master without a corresponding master request (i.e.,
without an STX). BACK messages ...
Tue, 8 Nov, 2016 at 4:26 PM
A HART transaction consists of an STX and a corresponding ACK. STX is Start of Transaction since it begins the HART transaction. STX is also referred to a...
Tue, 8 Nov, 2016 at 4:16 PM
A HART transaction consists of an STX and an ACK. The ACK is the Acknowledge which is also known as the response of a
slave device to a master message (i...
Tue, 8 Nov, 2016 at 4:17 PM
Every time the Burst Timer expires, the bursting slave must send a BACK to a different master. If more than one burst message are configured, then the sam...
Tue, 8 Nov, 2016 at 5:02 PM
When in burst mode a BACK must immediately follow every ACK from the burst-mode device.
Command 108 response(ACK) must indicate the new Command nu...
Tue, 8 Nov, 2016 at 5:05 PM