C-MORE EA1-TCL-M Hardware User Manual - 5–14
Test Menu – Serial Port - Loop Back Test
With Serial Port -
Loop Back Test
highlighted, press
ENT [F5] to bring up
the screen shown to
the right. At this
point, either connect
the RS-232 loop back
connector or the
RS-422/485 loop
backconnector,
depending on which
type of
communications
connection is being
used, and press ENT
[F5] to start the test.
If the test is passing,
the Receive Counts
will equal the Bytes
Sent. If the serial port
is not working, then
the Error Counts will
equal the Bytes Sent.
The RTS/CTS signals
will also show either
pass or fail as shown
to the right. The test
will continue until
the BAK [F1] key is
pressed.
1
15
15-pin D-sub
(male)
2
3
TXD
RXD
7
8
CTS
RTS
RS-232 Loop-back Connector
User Constructed
Wiring Diagram
1
15
15-pin D-sub
(male)
7
8
CTS
RTS
9
11
RXD+
TXD+
10
12
RXD
TXD
RS-422/485 Loop-back Connector
User Constructed
Wiring Diagram
BAK
UP
DWN
ENT
ENT
TEST MENU
1 Serial Port1 Loop Back
2 Serial Port2 Loop Back
3 PLC Enquiry Test
4 Buzzer Test
5 Touch Panel Test
BAK
UP
DWN
ENT
ENT
TEST MENU
1 Serial Port Loop Back
2
3
4
Use Loop Back
Connector and
Press ENT
BAK
UP
DWN
ENT
LOOP BACK TEST
ESC
Serial Port
Bytes Sent 124
Rcv Counts 124
Err Counts 0
RTS/CTS pass
®
5
Chapter 5: System Setup Screens
5–14
EA1-TCL-M Hardware User Manual, 1st Ed., 12/09
BAK
UP
DWN
ENT
LOOP BACK TEST
ESC
Serial Port
Bytes Sent 124
Rcv Counts 0
Err Counts 124
RTS/CTS fail