Component Names And Functions; Display Section - Omron CS1W-CRM21 Operation Manual

Master Unit Specifications
2-1-2

Component Names and Functions

CS-series Master Unit
CRM21
MACH
No.

Display Section

Shows the Master Unit status and Slave Unit communications status.
· Indicators
Four LED indicators:
MS (green/red), NS (green/red), SD (yellow), and RD (yellow)
+100
MS
· Seven-segment Display
NS
Displays the communications status, error code, etc.
SD
(two digits plus a dot that indicates "+100")
RD
Rotary Switches
1 0 · MACH No.
X10 X10
Special I/O Unit unit number setting
MODE
Two decimal rotary switches (0 to 99)
· MODE
ON
Communications mode number of the Master Unit
One decimal rotary switch (0 to 9)
1 DR0
2 DR1
3 ESTP
DIP Switch
4 REGS
Used to set the baud rate, communications stop mode, and Registration Table (4-pin switch).
NETWORK
POWER
SUPPLY
SW1 SW2
BS+
DR0
BS-
DC24V
OFF
INPUT
ON
OFF
BS +
ON
BD H
SW
BD L
3
BS -
4
Communications Power Supply Connector
Connect this connector to a 24-VDC power supply when using Round Cable II, Flat Cable
I, or Flat Cable II cable.
Doing so will supply communications power to the Slave Units and Repeater Units on the
trunk line from the communications connector through the Flat Cable.
Note: Do not connect anything to this connector when using Round Cable I cable.
Communications Connector
Connect the communications cable to this connector.
BS+, BS- (communications power) and BDH, BDL (communications data)
BS+ and BS- are used only when using Round Cable II, Flat Cable I, or Flat Cable II
cable to output the communications power supply connected to the communications
power supply connector.
Note: Open Type Connector (to connect Units to the Cable) can be used to connect to a
terminal block.
Baud rate setting
DR1
4 Mbits/s (default)
OFF
Note: A baud rate of 4 Mbits/s is not supported for branch lines and thus cannot be used for
Slave Units with Cables (i.e., Bit Slave Units).
OFF
3 Mbits/s
ON 1.5 Mbits/s
93.75 kbits/s
ON
Name
Communications stop
ESTP (Communications Error
when a communications
Communications Stop Mode)
error occurs.
REGS (Registration Table Registration Table
Enable Setting) enabled.
Section 2-1
ON OFF
Communications do not
stop when a communica-
tions error occurs.
Registration Table
disabled.
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