Hitachi Hidic EH-150 EH-OLNK Applications Manual page 10

2.4 Differences with upper level H series equipment
Table 2.4 shows the differences between the EH-OLNK and the OLINK-SH CPU link module (single-slot,
optical cable) and the OLINK-H (twin-slot, optical cable) for use with large upper level H series equipment.
Item
Usable CPU module
Slot width
Bypass relay*
7 segment display
Module information
display LED
Error indication
select switch
Check mode select
switch
Mount position
Mount units
*1: There are cases where support is not yet available depending on the CPU version. Refer to section 1.3
for further details.
*2: A bypass relay is the device to pass the data from other stations at the time of power supply off.
*3: OLINK-SH cannot be installed into slot #0.
*4: A maximum of two modules that have been I/O assigned as "CPU Links" can be installed. When
modules other that this module (EH-RMP, etc.,) are assigned as "CPU Links" and installed, the number of
CPU link modules that can be installed will be reduced in direct relation to the number installed.
Table 2.4 Differences with upper level H series equipment
EH-OLNK
EH-CPU308A,
EH-CPU316A,
1
EH-CPU448*
1 slot
2
Exist (No bypass cassette or
bypass module)
None
RUN, ERR, TXD, RXD
None
None
Can be installed in slots
#0 to #2 on the basic
base.
Max. 2 units per CPU*
CPU3-40H,
CPU2-20H, CPU-20Ha,
CPU2-10H,
CPU2-07H, CPU-07Ha,
CPU2-03H, CPU-03Ha
1 slot ( OLINK-SH )
2 slots ( OLINK-H )
Fitted with a bypass cassette as standard.
displays error information
ERR, SEND, REC
Select error indication
Selects check mode
Can be installed in any slot on the basic
3
base. *
4
Max. 2 units per CPU
2-2
Chapter 2. Specifications
OLINK-H / OLINK-SH