Setra System Model 470 - Manual (Page 22)

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2. Transmit -5555S. This is the baud rate access code.
3. Transmit the new baud rate. The Setra 470 supports 300, 600, 1200,
2400, 4800, or 9600 baud. If the 470 responds “CAL BR”, the baud rate is not
supported, repeat this step.
4. Transmit S
For example, to change the baud rate of the transducer to 9600,
transmit:
-5555S9600S
5. Adjust the baud rate of the computer or terminal being used to
communicate with the Setra 470 at the new rate.
B) This just entered baud rate is used by the 470 until power-down. After power-up, the 470
will resume using the previous baud rate.
To change the baud rate so that the new rate will be retained and used even after power
is removed and restored, continue with the following procedure:
6. Set the program enable switch to “ON” (Section 7.2).
7. Repeat steps 1-4.
8. If the 470 responds “NO CAL”, the program enable switch in Step 6 is
not set. Transmit C, for CLEAR and restart this procedure from Step 5.
9. The 470 responds “PROTEC”. Set the program enable switch to
“OFF”. Transmit C, for CLEAR, to resume operation.
5.3 Disabling Engineering Units in Nonvolatile Memory
Some applications require you to alternate the engineering units that the data is reported in from
one unit to another. To make that more convenient, the Setra 470 can disable one or more of the
built-in engineering units accessed by the CONVERT function. This setting is saved until a new
one is entered, even if power is shut off and turned back on, unless a new setting is entered into
volatile memory using the procedure in Section 5.4.
Use the following procedure to enable and disable selection of any of the engineering units by the
CONVERT function.
1. Use the CONVERT function (see Section 4.2) so that the 470 reports data in units of
pressure in response to an interrogation. (i.e., the transducer should not be reporting in units
of altitude.)
2. Set the program enable switch to “ON” (Section 7.2).
3. Transmit -2222SS, the Engineering Units access code.
4. If the 470 responds “NO CAL”, the program enable switch in Step 2 is not set to “ON”.
Transmit C, for CLEAR, and restart this procedure from the beginning.