15
5
Commands
5.1
Communications
1.1
Changing the I2C
Slave Address
Dec
Hex
ASCII
254 51
FE 33
■
3
Address
Address
Address
Immediately changes the I2C write address. Only even values are permitted as the next odd address will become
the read address. Default is 80.
Address
1 byte, even value
1.2
Changing the
Baud Rate
Dec
Hex
ASCII
254 57
FE 39
■
9
Speed
Speed
Speed
Immediately changes the baud rate. Not available in I2C. Baud rate can be temporarily forced to 19200 by a
manual override.
Speed
1 byte, valid settings shown below
Table 15: Accepted Baud Rate Values
Rate
9600
14400
19200
28800
38400
57600
76800
115200
Speed
207
138
103
68
51
34
25
16
1.3
Setting a Non-Standard
Baud Rate
Dec
Hex
254 164
FE A4
Speed
Speed
Immediately changes the baud rate to a non-standard value. Speed must be a whole number between 977 and
153800. Due to rounding, error increases with baud rate, actual baud must be within 3% of desired baud to ensure
accurate communication. Not available in I2C. Can be temporarily forced to 19200 by a manual override.
Speed
2 byte, calculations shown below
Equation 1: Speed Byte Calculation
Equation 2: Actual Baud Rate Calculation
Equation 3: Baud Rate Error Calculation
1.4
Transmission
Protocol Select
Dec
Hex
254 160
FE A0
Protocol
Protocol
Selects the protocol used for data transmission to the host. Data transmission from the host is not affected. Must
be set to the protocol in use to receive data correctly.
Protocol
1 byte, 1 for Serial (RS232/RS422/TTL/USB) or 0 for I2C
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