Mitsubishi Electric MELFA CR750 Series User Manual page 454

Communications (RS-232)
If you can not communicate with the robot controller using RS-232, check the following.
Also, see "0Communications (general)".
Check item or cause
What color is Communications Server 2?
Return Communications Server 2 to icon
status and check the color displayed for the
line state.
(1)
When Communications Server 2 is red (RS-232)
If Communications Server 2 is displayed red with communications with the robot controller set to RS-232, check
the following.
Check item or cause
Is Communications Server 2 set for the
correct communications port
(COM1-COM10)?
Is some other product running that uses the
communication port?
Or is any permanent resident software
running that uses the communications port?
In the communications settings for this
software, is the communications method set
to TCP/IP or USB?
(2)
When Communications Server 2 is green (RS-232)
If Communications Server 2 is displayed green with communications with the robot controller set to RS-232,
check the following.
Check item or cause
Do the communications settings in this
software and on the robot controller match?
In particular, check that the protocol settings
match.
(3)
When Communications Server 2 is light blue or blue.(RS-232)
If Communications Server 2 is displayed light blue with communications with the robot controller set to
RS-232, check the following.
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The problem may be that the robot controller
is not connected correctly.Check the items in
Red
"(1) When Communications Server 2 is
red (RS-232)".
The problem may be that the robot controller
and the computer have different
Green communications settings.Check the items in
"(2) When Communications Server 2 is
green (RS-232)".
Yellow See "0Communications (general)".
Check the items in "(3) When
Light blue
Communications Server 2 is light blue or
Blue blue.(RS-232)".
The default value for this software is COM1. On some
computers, COM1 is not allocated to RS-232, but to an
infrared port, modem, or the like. Also, when using
RS-232 over USB, the port used for RS-232 may be
other than COM1.
Use the Windows device manager or the like to check
the COM number allocated to RS-232 and change the
"Port" setting in the communications settings to that port.
A computer communications port can not be opened for
two applications, so either close the other application or
change the port that this software uses.
Change the communications method to RS-232.
The communications settings in this software and on the
robot controller must match.
The default protocol for this software is "Procedural", but
for CRn-500 series robot controllers, the default protocol
is "Non-Procedural"
Solution
Solution
Solution
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