Rs-422A/485 Port - Omron CQM1H-SCB41 Operation Manual

Component Names and Functions
!Caution Do not connect the 5-V power supply of pin 6 to any external device other
Applicable Connectors
Recommended Cables
2-1-3

RS-422A/485 Port

Protocol Host Link
Communica- Half-duplex
tions method
4-wire, 1:1 OK
4-wire, 1:N OK
2-wire, 1:1 No
2-wire, 1:N No
Synchroniza- Start-stop synchronous (asynchronous)
tion
Baud rate 1,200/2,400/4,800/9,600/ 19,200 bps
Connections 1:N (N: 32 Units max.)
Transmission 500 m max.
distance (The total combined cable length is 500 m max. T-branch lines must be a maximum of 10 m long.)
Interface Complies with EIA RS-485
Connector Pin Layout
12
than an NT-AL001-E Link Adapter. Otherwise, the external device and the
Serial Communications Board may be damaged.
The following cables are provided for connection to NT-AL001-E Link Adapt-
ers. We recommend that these cables be used.
NT-AL001-E connecting cables: XW2Z-070T-1 (0.7 m)
Socket: XM2A-0901 (OMRON) or equivalent
Hood: XM2S-0911-E (OMRON, conforms to ESD) or equivalent
One Socket and one Hood are provided for each port.
UL2464 AWG28 5P IFS-RVV-SB (UL-approved, Fujikura Ltd.)
AWG28 5P IFVV-SB (not UL-approved, Fujikura Ltd.)
UL2464-SB (MA) 5P 28AWG (7/0.127) (UL-approved, Hitachi Cable, Ltd.)
CO-MA-VV-SB 5P 28AWG (7/0.127) (not UL-approved, Hitachi Cable, Ltd.)
Cable length: 15 m max.
No-protocol Protocol macros
OK OK
OK OK
No OK
No OK
Pin No.
1 (See note 1.)
2 (See note 1.)
3
4
5
6 (See note 1.)
7
8 (See note 1.)
9
Shell (See note 2.)
Note 1. When 2-wire connections are used, use pins 1 and 2, or pins 6 and 8.
2. The shell is connected to the ground terminal (GR) of the Power Supply
Unit inside of the Serial Communications Board. Therefore, the cable
shield can be grounded by grounding the GR of the Power Supply Unit.
XW2Z-200T-1 (2 m)
1:1 Data Links
OK
No
No
No
19,200 bps
1:1
Abbreviation Signal name
SDA Send data –
SDB Send data +
NC Not used
NC Not used
NC Not used
RDA Receive data –
NC Not used
RDB Receive data +
NC Not used
FG Shield
Section 2-1
1:N NT Links 1:1 NT Links
OK OK
OK No
OK No
OK No
38,400 bps 19,200 bps
1:N (N: 8 Units 1:1
max.)
I/O
Output
Output
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Input
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Input
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