VF Message Controller Farnell Order Code 249-531 Function The unit is designed to interface between an RS232 port and 16 character 1 line Vacuum Fluorescent display module based on the OKI MSC1937 controller (481-671 & 942-420). Control codes are interpreted while standard ASCII characters are passed through to the display. The software converts lower case characters into upper case. Control Codes ^Axx ^Bxx 01h Cursor position (0-15) 02h Brightness (0-30) Where xx is the position on the line ^L ^O ^H ^F ^R 0Ch 04h 05h 06h 12h Clear display Display off Half brightness Full brightness Reset display Interface J1 - data link and power feed 3 RS232 data in 5 0V J2 – VF Display 1 +5V 2 Clock 3 nc 4 Data 5 Reset 6 0V Power – 9-15V nominal +ve nearest edge of board -ve next to RS232 connector Switch Settings Switch settings are read on power up only. 1 2 3 0 0 1 1 1 4 0 1 0 1 Function 1200 baud 2400 baud 4800 baud 9600 baud test mode Test mode displays "VFMC 1.0” for 1 second Bluebird Electronics Suite 2, Townsend Barn, Poulshot, Devizes, Wilts SN10 1SD 01 380 827 080 email info@ bluebird-electronics.co.uk http://www.bluebird-electronics.co.uk