Mitsubishi Electric MELSEC Q Series Programming Manual page 605

APPENDICES
Device
Name
No.
SSCNET /H
compatible
optical hub unit
SD724
loading
information
(Line 1)
SSCNET /H
compatible
optical hub unit
SD725
loading
information
(Line 2)
SSCNET /H
compatible
optical hub unit
SD726
communication
error information
(Line 1)
SSCNET /H
compatible
optical hub unit
SD727
communication
error information
(Line 2)
POINTS
(1) If the optical hub unit is connected to a sub route, an error occurs, and the
optical hub unit does not communicate with the Motion CPU.
(2) A servo amplifier can be connected between two optical hub units, and between
a Motion CPU and an optical hub unit.
(3) When turning OFF the control circuit power supply of SSCNET /H compatible
equipment connected to an optical hub unit, use the "connect/disconnect
function of SSCNET communication". Refer to "Q173D(S)CPU/Q172D(S)CPU
Motion controller Programming Manual (COMMON)" for details of
"connect/disconnect function of SSCNET communication".
(3) Checking the status of the optical hub unit
The connection status of the optical hub unit can be checked with the special
registers below.
Meaning
SSCNET /H • Checks the connection status (Installed: 1/Not installed: 0) of the optical
compatible hub unit and stores as bit data.
optical hub unit SD724: b0 to b15 (Optical hub unit No.1 to No.16 on line 1)
loading SD725: b0 to b15 (Optical hub unit No.1 to No.16 on line 2)
information
(Line 1)
• "1" is stored to the installation status of an optical hub unit with a servo
amplifier connected.
SSCNET /H
• "0" is stored to the installation status when an optical hub unit is not
compatible
connected after an optical hub unit that is not connected to a servo
optical hub unit
amplifier, or when the optical hub unit connected after an optical hub unit
loading
is not connected to a servo amplifier either.
information
• For optical hub units connected before an optical hub unit connected to
(Line 2)
a servo amplifier, "1" is stored to the installation status, regardless of
whether there is a servo amplifier connection or not.
SSCNET /H
compatible
• Checks the communication status (Communication error detected: 1/No
optical hub unit
communication error detected: 0) of the optical hub unit and stores as bit
communication data.
error information
SD726: b0 to b15 (Optical hub unit No.1 to No.16 on line 1)
(Line 1)
SD727: b0 to b15 (Optical hub unit No.1 to No.16 on line 2)
SSCNET /H
compatible
optical hub unit • The device contents are not reset by turning power supply of optical hub
unit OFF/reset, or by disconnecting/reconnecting communication with
communication
the Motion CPU. Reset the device contents manually.
error information
(Line 2)
Details
(Note): No. 1 to No. 16 is the connection order from the Motion
CPU
(Note): No. 1 to No. 16 is the connection order from the Motion
CPU
APP - 114
Set by
System
(Operation
cycle)
System
(Occur an
error)