Chip Operating Mode Setting; Reader/Writer Setting - Omron V720S Series Operation Manual

Reader/Writer Setting

1) Communications type setting for COM1 port
2) Node No. setting
3) Terminal resistance setting

4-1-2 Chip Operating Mode Setting

Set whether COM1 will be used as RS-232C or RS-485
by using the communications type setting command (CT) (refer to No. 4 in
5-6-8 of Section 5).
Setting name
(command name)
Communications
type setting *1
(CT command)
If more than one Reader/Writer is connected to a single host, each
Reader/Writer needs an ID number so that the host can discriminate one
Reader/Writer from another. Such an ID number is called node number. Each
Reader/Writer must be assigned a unique node number. Each command or
response includes the node number of the Reader/Writer. Communications
will not be possible if the node number is wrong.
The setting can be saved by executing the setting write command.
Use the node number setting command (NM) to set a node number (refer to
No. 1 in 5-6-6 of Section 5).
Setting name
(command name)
Node No. setting
(NM command)
Note Communications through COM2 are possible regardless of the node number
setting.
This setting is necessary when COM1 is used as RS-485.
If more than one Reader/Writer is connected to a single host, terminal re-
sistance must be turned on for both the host and the Reader/Writer con-
nected to either end of the host in order to ensure stable operation. The set-
ting can be saved by executing the setting write command.
Use the terminal resistance setting command (TM) to set the terminal resis-
tance (refer to No. 2 in 5-6-11 of Section 5).
Setting name
(command name)
Terminal resistance
setting
(TM command)
Note For more information, refer to 4-4-2-2 RS-485 Interface Cabling.
This Reader/Writer consists of 2 types of operating modes (hereinafter called
"operating mode") in accordance with a type of the Tag (an incorporated IC
chip). You have to set either of the operating modes in accordance with the
Tag you choose.
Execute the operating mode switch setting command (TY) (refer to 5-6-15 of
Section 5).
Setting name
(command code)
Operating mode
switch
(TY command)
Default set value Setting range
RS-232C
RS-232C
RS-485
Default set value
00
Default set value
OFF
Default
Setting range
value
ISO mode
I.CODE
1 mode
I.CODE1 mode
Section 4-1
Setting range
00～31
Setting range
ON/OFF
Remarks
Adherence to
ISO/IEC15693 standards
(I.CODE2 chip)
Adaptable to I.CODE1
chip
4-3