SST Automation GT200-HT-RS, Руководство пользователя

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considered to be (1/19200) * 10 * 3.5 ≈ 2ms. The other is to start transmit-receive of HART common frame of
HART indirectly through Modbus command, here is an example:
06H command "common
mode enable" bit is 1
10H command will write the data
to a continuous region which
address begins from “Universal
mode send data”
The length of the data written to
"The universal send data length"
address with 06H command
06H command to change "the
Universal send data label”
The gateway will store the received HART frame in a continuous region within "the Universal receive data"
as a starting address and write the length of the received data in the "Universal received data length". Then change
the value of the Universal receive label". If no data is received within the response waiting time, the gateway will
order "universal receive error counter" to plus 1. Before sending the general frame, user should read the universal
receive label and the error counter. After transmitting the general frame, it needs to read these two values
continuously until one of them changes.
5.3 Trigger Command
Users can use Modbus command to trigger any HART command which is configured by gateway. The
specific approach is: using command ID6 of Modbus to write the user command number which needs to be
triggered (when SST-HT-CFG configures commands, the software will automatically calculate and display) to the
"trigger command number". Then rewriting "the trigger label" can trigger the value to change and trigger the