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Realtime Express(RTEX)

Advanced Network to realize high-precise
real-time performance for Servo Control

A6N

Concept

✓ High Performance & Low Cost
✓ Simple
✓ High Reliability
✓ Easy Development

Please feel free to contact us if you have any inquiries or
would like to have a conference or request quotations for RTEX

*Realtime Express and RTEX are registered trademarks of Panasonic Holdings Corporation.

Introducing Realtime Express(RTEX)

Related Files

Related Information

What is RTEX?

Realtime Express is a high speed synchronous motion network developed by Panasonic Industry Co., Ltd.
While being 100 Mbps very high speed (ten times higher than our previous model), the system cost can be kept low by using the commercially available LAN cable.
Because of this reason, industries like semiconductors, liquid crystal manufacturing equipment, electronic parts mounter etc. where strong compatibility between high speed and low cost is strongly required are adopting these products more and more.
In addition, since the protocol is very simple, it is much easier to develop a compliant controller than a general motion network.

Com. speed 100Mbps Full-duplex
32 axes with 100Mbps. At Com. period 0.5ms.^(*1)
Fully Synchronization
Low-cost Ethernet cable^(*2)
Noise immunity with unique error correction(IEC61000-4-4 compliant)

(*1)	Depends on a host controller specification
(*2)	CAT5e STP
*	Realtime Express and RTEX are registered trademark of Panasonic Holdings Corporation.

System Structure

High-Efficiency Ring Topology

Global Collaboration

*	2022.01

All-in-One Motion I/F

Note:	Profile Position is applicable to only “Point to Point (PTP)” control.

Combination of Period, Axes and Modes(A6NE、A6NF)

Update Period	Com. Period	Max. # of Axes (*)		Available Mode
Update Period	Com. Period	16-byte Mode	32-byte Mode	Available Mode
4.000 ms	2.000 ms	32	16	PP, CP, CV, CT
2.000 ms	2.000 ms	32	16	PP, CP, CV, CT
2.000 ms	1.000 ms	32	16	PP, CP, CV, CT
1.000 ms	1.000 ms	32	16	PP, CP, CV, CT
1.000 ms	0.500 ms	32	16	PP, CP, CV, CT	Typical
0.500 ms	0.500 ms	32	16	PP, CP, CV, CT
0.500 ms	0.250 ms	16	-	PP, CP, CV, CT
0.250 ms	0.250 ms	16	-	PP, CP, CV, CT
0.250 ms	0.125 ms	8	-	CP, CV, CT
0.125 ms	0.125 ms	8	-	CP, CV, CT
0.125 ms	0.0625 ms	4	-	CP, CV, CT

Com. Period	:	Frame transmitting period
Update Period	:	Data inside the frame updating period

*	If some devices except servo is also connected on RTEX, this number is decreased.

Update and Communication Period

Shorter communication period makes quick response.

Note:	The same command is transmitted two times. If previous command has communication error, the subsequent one is used in servo.

Shorter Update Period

More precisely on high-speed CP control in micro circular interpolation such as laser machine and LCD dispenser.

Increased the number of points per distance makes command position more smooth in addition to new high-resolution encoder.

Monitoring Item Examples

Drive Model No.
Drive Serial No.
Firmware Version
Motor Model No.
Motor Serial No.
Alarm Code (History)
Warning Code
Parameters

Actual Position
Actual Velocity
Torque
Position Error
Encoder Resolution
Commanded Position
Latched Position
Commanded Velocity
Re-Generative Ratio
Over-Load Ratio
Inertia Ratio
Rotor Mechanical Angle
Rotor Electrical Angle
Absolute Multi-turn Data
P-N Voltage
RTEX Com. Error Count
Encoder Com. Error Count
X4 Connector I/O

Power-ON Time
Drive Temperature
Encoder Temperature
Relay Switch Times
Fan ON Time
Fan Life Time
Capacitor Life Time

Precise Position Latch

After the encoder position is latched at trigger input, it is sent to the host controller with RTEX.

Feed-Forwards from Host Controller

High-resolution feed-forward from host controller is effective for both high-response and low-vibration.

*	In 16-byte mode, either velocity or torque FF available.
*	Torque FF is also useful for torque compensation in “Stick Motion” of circular interpolation.

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