Communication Module [CPU Link Module (Optional cable)]
System configuration
Specifications
| Item |
Specification |
| Type |
EH-OLNK |
| Functional specification |
Number of connected Link module |
Max. 64 units / 1 loop |
| Number of mounted units |
Max. 2 units / 1 CPU ( 2 loops / 1 CPU ) |
| Number of Link points |
1,024 words / 1 loop ( 2,048 words / 2 loops ) *1 |
| Data delivery system |
Common data area system |
| Send / Receive distinction on data area allocation |
Parameter setting from peripheral device |
Designation of
Station No. |
0 to 63 ;
designated by rotary switch |
| Communication speed |
1.0 Mbps |
| Transfer method |
Half - duplex serial transfer, frame synchronization |
| Communication method |
Token passing |
| Modulation method |
Base band |
| Refresh time |
In case of 1,024 words data and 64 stations connected -- Approx. 390ms *2 |
| Error check |
CRC, overrun check, time out, open circuit, parameter error ( dual designation of station No., overlapped Link area, etc.) |
| Self - diagnosis |
System ROM / RAM check, watchdog timer check, transfer loop back check |
| Transfer path specification |
Transfer path form |
Loop type |
| Cable length |
Between stations |
Max. 1,000m |
| Total extension |
Max. 15,000m |
| Error station processing |
Bypass system
( In case of supply a 5V DC from the outside. ) |
Recommended
connector |
CA7103-(1)M-(2)L(3)1 Hitachi Information & Communication Engineering, Ltd. product
(1) Cable length, (2)Cable type, (3) Core number |
| Internal Current consumpion |
5V DC Approximately. 550mA |
- *1
- No retentive area.
- *2
- This could be more in case peripheral devices access to CPU via link network.
- *3
- EH-LNK is supported by EH-CPU316A / 516 / 548.
|
