- Product details
- Specifications
- Recommand
- Service & Policy
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HITACHI · H-SERIES CPU LINK
Hitachi LINK-H H-Series CPU Link Communication Module
A two-slot H-Series communication module for deterministic CPU link exchange across one or two coaxial network loops.
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MODULE CLASS
CPU link module
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CONTROL ROLE
Coaxial controller-to-controller data exchange
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CONTROLLER-TO-CONTROLLER LINKING
Dual-loop CPU data exchange for Hitachi H-Series systems
LINK-H provides shared link registers and relays for coordinated communication among compatible H-Series CPUs.
Official technical data
| Product type |
CPU link communication module |
PLC family |
Hitachi H-Series |
| Transmission medium |
Coaxial cable |
Module width |
2 slots |
| Communication speed |
1.0 Mbps |
CPU capacity |
Up to 64 CPUs per system × 2 loops |
| Link data per loop |
1024 words |
Status display |
7-segment error information |
| Status LEDs |
ERR / SEND / REC |
Bypass feature |
Bypass cassette fitted |
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Safety & Compliance
Stop the PLC system and remove rack power before handling the module or coaxial connectors. Confirm termination, loop topology, slot allocation and grounding before restoring communication.
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Performance & Efficiency
A 1 Mbps link and shared relay/register areas support coordinated data exchange across multiple controllers. Front-panel status indication and a bypass cassette simplify diagnostics and service work.
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Brand characteristics
Hitachi H-Series PLC modules use modular racks, dedicated communication functions and front-panel diagnostics for long-life industrial control installations.
| Rack architecture |
Special-function modules occupy defined H-Series slots. |
| Link diagnostics |
ERR, SEND and REC indications support direct checks. |
| Legacy continuity |
Documented modules help maintain established controller networks. |
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Application fields
LINK-H connects H-Series CPUs where process sections or machines must share status, commands and production data.
| Production lines |
Controller coordination across linked machine sections. |
| Material handling |
Shared interlocks and routing data between PLC stations. |
| Legacy upgrades |
Communication retention during phased system modernization. |
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Helmholz
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700-972-0BA12
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700-972-7BA12
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700-751-1VK21
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700-752-1AA23
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700-860-MPI01
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700-600-1AA11
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700-600-2AA11
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700-600-3AA11
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700-500-0AA01
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700-400-1AA01
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700-400-2AA01
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700-300-1AA01
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700-300-2AA01
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700-751-8VK21
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700-972-0BB12
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700-972-7BB12
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700-158-0AD02
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700-153-8AA01
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700-151-0AA23
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01 · IDENTIFY
Provide LINK-H nameplate, installed H-Series CPU, loop topology and quantity.
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02 · VERIFY
Confirm compatible CPU, two-slot space, coaxial link settings and termination.
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03 · QUOTE
Review pricing, lead time, warranty and delivery terms.
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04 · DISPATCH
Complete order checks, protective packing and shipment planning.
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