APP - 114
APPENDICES
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.
Device
No.
Name Meaning Details Set by
SD724
SSCNET
/H
compatible
optical hub unit
loading
information
(Line 1)
SSCNET
/H
compatible
optical hub unit
loading
information
(Line 1)
• Checks the connection status (Installed: 1/Not installed: 0) of the optical
hub unit and stores as bit data.
SD724: b0 to b15 (Optical hub unit No.1 to No.16 on line 1)
SD725: b0 to b15 (Optical hub unit No.1 to No.16 on line 2)
(Note): No. 1 to No. 16 is the connection order from the Motion
CPU
• "1" is stored to the installation status of an optical hub unit with a servo
amplifier connected.
• "0" is stored to the installation status when an optical hub unit is not
connected after an optical hub unit that is not connected to a servo
amplifier, or when the optical hub unit connected after an optical hub unit
is not connected to a servo amplifier either.
• For optical hub units connected before an optical hub unit connected to
a servo amplifier, "1" is stored to the installation status, regardless of
whether there is a servo amplifier connection or not.
System
(Operation
cycle)
SD725
SSCNET
/H
compatible
optical hub unit
loading
information
(Line 2)
SSCNET
/H
compatible
optical hub unit
loading
information
(Line 2)
SD726
SSCNET
/H
compatible
optical hub unit
communication
error information
(Line 1)
SSCNET
/H
compatible
optical hub unit
communication
error information
(Line 1)
• Checks the communication status (Communication error detected: 1/No
communication error detected: 0) of the optical hub unit and stores as bit
data.
SD726: b0 to b15 (Optical hub unit No.1 to No.16 on line 1)
SD727: b0 to b15 (Optical hub unit No.1 to No.16 on line 2)
(Note): No. 1 to No. 16 is the connection order from the Motion
CPU
• The device contents are not reset by turning power supply of optical hub
unit OFF/reset, or by disconnecting/reconnecting communication with
the Motion CPU. Reset the device contents manually.
System
(Occur an
error)
SD727
SSCNET
/H
compatible
optical hub unit
communication
error information
(Line 2)
SSCNET
/H
compatible
optical hub unit
communication
error information
(Line 2)
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