Chapter 2. Specifications
2-2
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.
Table 2.4 Differences with upper level H series equipment
Item
EH-OLNK
OLINK-H / OLINK-SH
Usable CPU module
EH-CPU308A,
EH-CPU316A,
EH-CPU448*
1
CPU3-40H,
CPU2-20H, CPU-20Ha,
CPU2-10H,
CPU2-07H, CPU-07Ha,
CPU2-03H, CPU-03Ha
Slot width
1 slot
1 slot ( OLINK-SH )
2 slots ( OLINK-H )
Bypass relay*
2
Exist (No bypass cassette or
bypass module)
Fitted with a bypass cassette as standard.
7 segment display
None
displays error information
Module information
display LED
RUN, ERR, TXD, RXD
ERR, SEND, REC
Error indication
select switch
None
Select error indication
Check mode select
switch
None
Selects check mode
Mount position
Can be installed in slots
#0 to #2 on the basic
base.
Can be installed in any slot on the basic
base. *
3
Hardware Specifications
Mount units
Max. 2 units per CPU*
4
Max. 2 units per CPU
*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.
