Matrix-orbital VK204-25 Legacy Manual do Utilizador descarregar pdf (Página 11)

complies with the EIA-232 standard in that it uses signal levels from +/- 3V to +/- 12V. It will not operate

correctly at TTL (0 to +5V) levels.

Table 4: RS-232 Pinout

Pin Number Direction Description VFD Host

2 Data from VFD Data out Tx Rx

3 Data to VFD Data in Rx Tx

5 - Ground gnd gnd

2.1.5 Conﬁguring RS-232 and I

RS-232 baud rate and I

C address are conﬁgured by means of jumpers.

Figure 9: RS-232 Jumpers

The module is supplied with jumpers J1 and J2 installed, which gives an RS-232 baud rate of 19200 and

an I

C address of 0x5C.

• RS-232 port: J0, J1, J2 - control baud rate. RS-232 format is 8N1 (8 bits, no parity, one stop bit)

• I

C port: J0, J1, J2, J3 - sets slave peripheral address

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Matrix-orbital VK204-25 Legacy Manual do Utilizador Página 11