The GRV-CSERI-4 serial module from Opto 22 add RS-232C and RS-485 serial communications to the EPIC system. The GRV-CSERI-4 serial module from Opto 22 add RS-232C and RS-485 serial communications to ...

[André Sarmento] needed to connect a computer to an RS-485 bus. A simple converter can be sourced online, but the only thing he could find locally that was even close was a USB to RS-232 converter.

The LTM2881 will be followed by RS-232c, CAN, and other versions for popular industrial-control buses. Packaging options comprise low-profile, 11.25- by 15- by 2.8-mm surface-mount land-grid and ...

The MC1489 converts the RS-232C data to TTL signals. A 7404 gate then inverts the signal. The output of the 7404 drives Q 1, a 2N3055 power transistor. The transistor drives the set of three LEDs to ...