YHLS Master Module and Slave Units

High-speed remote I/O providing flexibility for development, production and maintenance

YHLS Master Module (F3LH01-1N / F3LH02-1N)

A remote I/O system constructed by connecting YHLS master module and slave units features YHLS' high speed, simple & reduced wiring, easy maintenance and open architecture. These benefits help users contain manufacturing cost through flexible equipment development, as well as trim total cost through easier equipment upgrade and maintenance.

Fast	- Up to 12 Mbps. Scan 63 slave units in just 0.96 ms in full-duplex mode.
	- High-speed scan of 243 μs per 256 I/O points
Compact	- Slave unit size is halved (32-point slave has the same size as competitors' 16-point slave.)
Reliable	- Guaranteed constant scan time (not affected by noise and online connection/disconnection of slave units)
	- Protected against short-circuit of I/O power supply of slave unit. (Error is reported to master module.)
	- Protected against short-circuit of output terminals of slave unit.
Maintainable	- Both power and communication connectors of slave unit support insertion/removal of live wires.
	- Allows online replacement of slave units.
	- Supports maintenance of individual sensors (I/O is equipped with individual power and ground signals and supports e-CON like wiring.)
	- Both master module and slave units are equipped with communications quality indicators.
Open	- Allows connection of third-party HLS devices.
	- Adopts the "HLS" open protocol, allowing user development of proprietary slave units.

*YHLS (Yokogawa Hi-speed Link System) adopts a HLS-compliant open protocol, enhanced to allow easy monitoring of transmission line quality during development and operation using RDY, ALM and LNK indicators.

Specification

Item	F3LH01-1N	F3LH02-1N
Transmission mode	4-wire full duplex or 2-wire half duplex
Transmission rate	3 Mbps, 6 Mbps or 12 Mbps
Transmission format	HLS compliant
Synchronization mode	Bit synchronization
Transimission distance	300 m (at 3 Mbps), 200 m (at 6 Mbps), or 100 m (at 12 Mbps)
Error control	CRC-12
Number of ports	1	2
Number of connectors	2	4
No. of slaves per module	63 *1 (32 per connector)	126 *1 (32 per connector)
No. of I/O points per module	1008 inputs 1008 output	2016 inputs 2016 output
Recommended cable	KM80 and KM81
RAS functions	- Automatic slave unit participation - Reset/hold outputs when CPU fails - Network quality monitoring