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Lineeye Co Ltd

More about Lineeye Co Ltd

Lineeye Co Ltd is a Japanese company specializing in communication protocol analyzers and data testing equipment. They produce portable and handheld analyzers that support multiple protocols like CAN, LIN, I2C, SPI, and USB. Their devices are used for troubleshooting and development of communication systems in industries such as automotive, industrial automation, and embedded systems.

LINEEYE LE series: monitor and simulate serial, CAN and LIN lines

LINEEYE's LE series is a family of portable protocol analysers that monitor and test serial communication on RS-232C, RS-422/485, TTL/UART, I2C, SPI, CAN, CAN FD and LIN lines. An LE analyser can sit on a live line and record what two devices say to each other, or take the place of one of them and send test data, so an engineer can find a protocol fault without writing any test code.

Monitor mode: listening to a live line

In monitor mode an LE analyser records the traffic between two devices without affecting the communication. It is wired in with a monitor cable (or a probe cable for TTL), captures the data with time stamps, and shows it on the instrument or on a PC. You can set triggers and search the captured data for errors, strings and timing problems.

Monitor mode: the analyser records the line between two devices and passes the capture to a PC.

Simulation mode: replacing one side of the link

In simulation mode an LE analyser acts as the communication partner, so you can test one device when the other is missing. It sends preset data and receives the replies, which lets you check how a device handles a request before the rest of the system exists. The LE-170SA, for example, sends 16 pre-registered CAN or LIN frames and can act as LIN master or LIN slave.

Simulation mode: Device B is absent, so the analyser sends its messages and receives the replies from Device A.

LINEEYE LE series at a glance

Model	Interfaces	Key figures	Simulation
LE-3500XR(V2)-E	RS-232C, RS-422/485, TTL (1.8 to 5 V); I2C, SPI	2.048 Mbps full duplex, 3.150 Mbps half duplex; 100 MB capture memory; SD or USB storage to 32 GB	6 modes including program mode; Modbus; BERT
LE-2500XR(V2)-E	RS-232C, RS-422/485, TTL (1.8 to 5 V); I2C, SPI	1.000 Mbps full duplex, 1.544 Mbps half duplex; 100 MB capture memory; SD or USB storage to 32 GB	4 modes, no program mode
LE-110SA	RS-232C, RS-422/485	Async only; colour touch screen; USB flash storage; 300 g	See product page
LE-120SA	RS-232C, TTL/UART	Async only; colour touch screen; USB flash storage; 300 g	See product page
LE-150PF	RS-232C, RS-422/485; TTL with the OP-5m probe pod	PC-connected or stand-alone SD logger (card to 32 GB)	16 preset send data
LE-200PF	RS-232C, RS-422/485; TTL optional	Async, PPP, SYNC/BSC, HDLC/SDLC; 1.544 Mbps; Wi-Fi; stand-alone SD logger	16 preset send data
LE-170SA	CAN, LIN	CAN 20 kbps to 1 Mbps; LIN 400 bps to 26 kbps; 16 MB memory	16 preset frames; LIN master or slave
LE-270AF	CAN, CAN FD, LIN	Data logger; SD card to 32 GB; Wi-Fi	Simulation and data send
LE-270GF	CAN, CAN FD, LIN	As LE-270AF, plus GPS position and acceleration recording	Simulation and data send

For network and USB work, LINEEYE also makes the LE-8600X (10 Gbit Ethernet), the LE-8500X (dual-channel Gbit Ethernet and PoE), the LE-590TX (10/100BASE-TX packet tester) and the LE-650H2 and LE-650H2-A USB 2.0 analysers.

Interface expansion kits

Expansion kits add bus types to an LE-3500XR or LE-2500XR, so one handheld analyser can cover serial, in-vehicle and synchronous links.

CAN, CAN FD and CXPI: the OP-SB7XC (CAN to ISO 11898, CAN FD to ISO 11898-1:2015, CXPI to JASO D015).
CAN FD, CAN and LIN: the OP-SB7XL; the OP-SB7GX adds CAN and LIN.
TTL, I2C and SPI: the OP-SB5GL, for the LE-2500 and LE-3500 series.
Current loop and RS-530: the OP-SB1C and the RS-530 expansion kit.
High-speed mode: the OP-FW10XR firmware for the LE-3500XR; LINEEYE quotes up to 10 Mbps for CC-Link, HDLC and SPI with the high-speed option.

Interface converters

LINEEYE also makes converters that put a serial device on a network or a PC. The SI-60-E and SI-60F connect RS-232C equipment to LAN. The SI-65, SI-65A, SI-65FA and SI-65FA-L do the same for RS-422/485. The SI-35USB and SI-35USB-2 convert USB to RS-422/485, and the SI-35USB-2 provides 3000 V isolation.

Protocols and key specifications

Serial: RS-232C, RS-422/485 and TTL (1.8 to 5 V) are standard on the LE-3500XR(V2) and LE-2500XR(V2); async/UART, SYNC/BSC, HDLC/SDLC, PPP, BURST, I2C and SPI are supported.
In-vehicle: CAN, CAN FD and LIN on the LE-170SA and LE-270 loggers, and CAN, CAN FD, LIN and CXPI through expansion kits.
Higher-level: Modbus analysis on the LE-3500XR(V2).
Test functions: trigger, search and bit-error-rate testing (BERT) on the LE-3500XR(V2).
Display: 4.3 inch colour touch screen on the XR models and the LE-110SA and LE-120SA.

Software and PC link

LINEEYE supplies PC software for browsing and converting captured data.

PC Link software for LE-3500XR(V2)/2500XR(V2): connects by Wi-Fi or USB, and lets you view captured data and convert it to text. It is available as PC Link software.
LE-LINK20 and LE-LINK20F: included with the LE-150PF and LE-200PF, and able to control several analysers at once.

Typical applications

Finding framing, parity and timing faults on RS-232C and RS-422/485 links between controllers and instruments
Reverse-engineering an undocumented serial protocol on a live line
Replacing a missing master or slave during development, with the analyser as the partner device
Long-term logging of a serial or CAN/LIN line to an SD card with a stand-alone LE-200PF or LE-150PF
In-vehicle CAN and LIN monitoring and field testing with the LE-170SA

Frequently asked questions

What is the difference between monitor and simulation mode?

Monitor mode listens to a live line between two devices and records the traffic without affecting it. Simulation mode makes the analyser act as one of the devices, sending test data and receiving the replies.

Which LINEEYE analyser should I choose for RS-232C and RS-422/485?

For the fullest feature set choose the LE-3500XR(V2), which adds a program simulation mode and Modbus analysis. The LE-2500XR(V2) has the same interfaces at lower speeds with 4 simulation modes. The LE-110SA is a simpler async-only handheld.

Can I monitor TTL or UART signals?

Yes. TTL (1.8 to 5 V) is standard on the LE-3500XR(V2) and LE-2500XR(V2), and the LE-120SA handles RS-232C and TTL/UART. The LE-150PF adds TTL with the OP-5m probe pod.

Can an LE analyser monitor CAN and LIN?

Yes. The LE-170SA is a dedicated CAN/LIN handheld, the LE-270AF and LE-270GF add CAN FD and logging, and the OP-SB7XC expansion kit adds CAN, CAN FD and CXPI to an LE-3500XR or LE-2500XR.

Can the analysers log without a PC?

Yes. The LE-3500XR(V2) and LE-2500XR(V2) save to SD card or USB flash up to 32 GB, and the LE-200PF and LE-150PF can run as stand-alone loggers writing to an SD card.

Is the PC software included?

The LE-150PF and LE-200PF include LE-LINK20 and LE-LINK20F. For the LE-3500XR(V2) and LE-2500XR(V2), PC Link software is listed as a separate item on our site as PC Link software.

Source: LINEEYE Co., Ltd product documentation. Need help choosing a model? Ask our engineers.

Lineeye LE-25M34 V35 Monitor cable

Lineeye LE-25M34 V35 Monitor cable

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Lineeye OP-SB7XL Expansion kit for CAN FD / CAN / LIN

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Lineeye OP-SB5GL Expansion kit for TTL, I2C, SPI

Lineeye OP-SB5GL Expansion kit for TTL, I2C, SPI

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Lineeye OP-SB1C Expansion kit for Current loop

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Analog pod for SB-C2AN

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Analog pod for SB-C2AN

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Lineeye OP-FW10XR LE-3500XR Firmware for High-Speed Mode

Lineeye OP-FW10XR LE-3500XR Firmware for High-Speed Mode

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Lineeye SI-65FA-L Interface Converter (LAN to RS-422/485)

Lineeye SI-65FA-L Interface Converter (LAN to RS-422/485)

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Lineeye SI-65FA Interface Converter (LAN to RS-422/485)

Lineeye SI-65FA Interface Converter (LAN to RS-422/485)

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Lineeye OP-5ML Probe Pod for TTL Monitoring

Lineeye OP-5ML Probe Pod for TTL Monitoring

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Lineeye LE-25Y37 RS-449 Monitor cable

Lineeye LE-25Y37 RS-449 Monitor cable

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Lineeye SI-65A Interface Converter (LAN to RS-422/485)

Lineeye SI-65A Interface Converter (LAN to RS-422/485)

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Lineeye SI-65 Interface Converter (LAN to RS-422/485)

Lineeye SI-65 Interface Converter (LAN to RS-422/485)

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Lineeye RS-530 Expansion Kit for LE-2500XR-E/LE-3500XR-E

Lineeye RS-530 Expansion Kit for LE-2500XR-E/LE-3500XR-E

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Lineeye LE-25Y15 X20/X21 Monitor cable

Lineeye LE-25Y15 X20/X21 Monitor cable

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PC Link software (for LE-3500XR(V2)/2500XR(V2))

PC Link software (for LE-3500XR(V2)/2500XR(V2))

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Lineeye SI-60-E LAN to RS-232C Interface Converter

Lineeye SI-60-E LAN to RS-232C Interface Converter

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