5. Each Component Function
98
BX710 series User’s Manual
Table 5.9. RS-422/485 Port Connector (Inside the RAS Connector)
Pin No.
Signal name
Meaning
2
TX +
Transmitted data +
10
TX -
Transmitted data -
3
RX +
Received data +
11
RX -
Received data -
Reference
For more information on the RAS connector see Table 5.12, "RAS connector".
RS-422/RS-485 Specifications
- Transmission
method
:
RS-422/RS-485-compliant, asynchronous, serial transmission, half
duplex/full duplex
-
Baud rate
: 50 - 230,400bps (programmable)
-
Signal extension distance : 1.2km Max.
Terminal Resister when RS-485 is in Use
It is set in BIOS setup menu. At the time of shipment, the setting is “no terminating resistance”.
For more details on this, please refer to Chapter 4, “Onboard Device”.
Control of Transmitted Data in Half-Duplex Mode
In half-duplex mode, the transmission buffer needs to be controlled in order to prevent collision of
transmitted data. The BOX-PC uses RTS and controls the buffer with modem control register's bit 1.
Transmission and reception gate control by the register setting of port address 4007h is allowed only for
the RS-422/485 (Serial port D). For more information see section, "General-purpose I/O and Remote
Reset" in Chapter 5.
Modem control register
(Set I/O a4H) bit 1
:
0 … RTS is High. (Disable transmission)
1 … RTS is Low. (Enable transmission)
Summary of Contents for BX710 Series
Page 1: ...IPC Series BOX PC for BX710 Series User s Manual CONTEC CO LTD ...
Page 7: ...vi BX710 series User s Manual ...
Page 18: ...2 System Reference BX710 series User s Manual 11 BX 710P2 AC5 Figure 2 2 BX 710P2 AC5 ...
Page 19: ...2 System Reference 12 BX710 series User s Manual BX 710P4 AC5 Figure 2 3 BX 710P4 AC5 ...
Page 35: ...3 Hardware Setup 28 BX710 series User s Manual ...
Page 61: ...4 BIOS Setup 54 BX710 series User s Manual OnChip IDE Device Figure 4 9 On Chip IDE Device ...
Page 78: ...4 BIOS Setup BX710 series User s Manual 71 Description Choice ...