C500BC031 Omron, C500BC031 Datasheet - Page 30

• Manufacturer Part Number: C500BC031
• Description: BACKPLANE
• Manufacturer: Omron

Specifications of C500BC031

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Types of Interfaces
14
RS-422 Interface (For Insulated C500-LK203)
C500-LK203 Noise Tolerance The RS-422 interface on the C500-LK203 Host Link Unit is insulated to improve
Termination resistance*
* The total termination resistance must be 100
The built-in resistance is 220
1 6
Host Link Unit
RDB
RDA
5
SDB
SDA
9
Ω
FG
.
7**
The table below lists the connections for interfacing a RS-422 cable to an insu-
lated C500-LK203 Host Link Unit.
* Viewed from the Host Link Unit.
** In order to prevent current flow in the shield
wire, make a connection to only one end of it.
Either pin 7 or the hood fitting can be used to
connect the shield wire to the frame ground.
FG
The maximum cable length is 500 m. Ground the FG terminals of both the PC
and the host computer to a point with a resistance of less than 100 Ω. For details,
refer to the PC or host computer manuals.
its tolerance to electrical noise. Although the increased tolerance provides bet-
ter performance under normal operating conditions, the operation ca be affected
in very noisy environments. For this reason the optical C500-LK103(-P) is rec-
ommended in situations where noise might be a problem.
Send data A
Send data B
Receive data A
Receive data B
Frame ground
Frame ground
Signal
Ω
*
min.
**
Symbol
SDA
SDB
RDA
RDB
FG
FG
Shielded wire
9
5
6
1
7
Hood fitting
Pin No.
**
In order to prevent current flow in the shield
wire, make a connection to only one end of it.
Either pin 7 or the hood fitting can be used to
connect the shield wire to the frame ground.
Link Adapter 3G2A9-AL004(-P)
1
RDB
6 5 9
RDA
Termination resistance*
SDB
SDA
7
FG
Section 1-5