User's Manual

2-2 Specifications
2-2
2-7
2-2-5 Host Communications Specifications
The RS-232C interfaces for COM1 and COM2 have separate communication ports, and thus it is
possible for these interfaces to have different communication settings. COM1 can be communicated via
RS-232C or RS485 interfaces. RS-232C for COM2 is primarily used for Reader/Writer setup, whereas
RS-485 pin at COM2 is used for multi-drop connection to other Reader/Writer devices.
COM1 connector
Item Description
Conforming standard RS-232C or RS-485
Communications
method
EIA/TIA-232-E half duplex or
EIA/TIA-485 half duplex
Baud rate 9600 bps, 19200 bps, 38400 bps, 115200 bps
Sync Start-stop synchronization (stop bit: 1 or 2)
Transmission code ASCII7 or JIS8 unit symbols
Max. number of
connections
31 (for connection via RS-485 Interfaces)
Error control
Vertical parity (select from even, odd, or none)
For BCC, use or non-use of horizontal parity can be selected.
Line length
4)
15 m (when RS-232C is selected)
300 m in total (when RS-485 is selected)
COM2 connector
Item Description
Initial value
(after resetting power
supply)
Conforming
standard
RS-232C -
Communications
method
EIA/TIA-232-E half duplex -
Baud rate 9600 bps, 19200 bps, 38400 bps, 115200 bps 9600 bps
Sync Start-stop synchronization (stop bit: 1 or 2) Stop bit 2
Transmission
code
ASCII7 or JIS8 unit symbols ASCII 7
Error control
Vertical parity (select from even, odd, or none)
For BCC, use or non-use of horizontal parity can be
selected.
• even
• Use for BCC
Line length
4)
smaller than or equal to 15 m -
Communication Settings
1) Either RS-232C or RS-485 interfaces must be selected for COM1.
2) The Communication Settings for COM1/COM2 are set using Communications Port Setting Command (CP).
3) The COM2 Communication Settings are reset to the initial values at power reset.
(The settings are maintained when reset with Reset Command) (XZ).
4) The line length may be shorter depending on the transmission rate applied, be sure to confirm the length in
advance.