Meilhaus Electronic ME-90 Series, Электронное руководство, Страница: 27 / 120

2.3.3.1 Settings “ME SIO Ports”
Mark a port in the control panel „ME SIO Ports“ (see Picture 8)
and click the button „Settings“. The next dialog offers you the
ability to set the operation mode of RS422/485 ports (see chap.
3.7 Operation Modes) and the FIFO trigger level. Every port
provides separate transmit and receive FIFOs. Each of them with a
size of 64 bytes (ME-9000 and ME-90 PC/104-Plus) resp.128
bytes (ME-9100/9300). For adaption to your system there is the
possibility to set the trigger level for reading resp. writing the
FIFO. When the trigger level is matched an interrupt occurs. For
most applications the default setting is useful. (RX Buffer =
Receive FIFO and TX Buffer = Transmit FIFO.
2.3.3.2 Port Settings
For most of the application programs the settings done in the
control-panel „Ports“ are not relevant. Exception: board-specific
parameters like the operation mode (see chap. 2.3.3.1 Settings