5 FUNCTIONS USED WITH SSCNET COMMUNICATION
5.8 Compatible Devices with SSCNETIII(/H)
277
5
Checking the status of the optical hub unit
The connection status of the optical hub unit can be checked with the special registers below.
Driver communication function
Driver communication function is only supported between servo amplifiers on the same route starting from the Motion CPU
until the last module.
Driver communication is not performed between servo amplifiers on different sub routes, or between a servo amplifier
connected on the main route after an optical hub unit and a servo amplifier on a sub route connected to an optical hub unit.
When an axis set for driver communication is in a position where driver communication cannot be performed, or when the
connection of an axis set for driver communication is not confirmed, all servo amplifiers including those that are on axes not
set to driver communication, cannot communicate with the Motion CPU.
Routes where driver communication function is possible are shown below.
: Driver communication, : No driver communication
Refer to driver communication function for details of "Driver communication function". (Page 193 Driver
Communication Function)
Device No. Name Meaning Details Set by
SD504 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.
SD504: b0 to b15 (Optical hub unit No. 1 to No. 16 on the first line)
SD506: b0 to b15 (Optical hub unit No. 1 to No. 16 on the second line)
*: 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)
SD506 SSCNET/H
compatible optical
hub unit loading
information (line 2)
SSCNET/H
compatible optical
hub unit loading
information (line 2)
Route Supported
Within the main route
Within the same sub route
Between different sub routes
Between main route and sub route
(Between slaves on first optical hub unit (main route) and sub route)
Between main route and sub route
(Between slaves on later optical hub unit (main route) and sub route)
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