F
UNCTION
B
OARDS
System 6844(RC) - V03.00
135 / 157
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
8.1
Function Boards for
System-Bus
These Boards have their own onboard microcontroller and can only be used in conjunction
with a System-Bus and Control Board. These Boards communicate with the Control Board
over the internal System-Bus. The Control Board simultaneously monitors the Function
Boards for errors. Due to the onboard microcontroller, these Boards have high performance
resources that allow them to compute time-critical operations in real-time and transmit the
time information highly accurately.
8.2
Function Boards
These are mostly simple output boards without their own "intelligence". Usually they receive
the information to be transmitted from any desired signal source. These Boards do not nec-
essarily need a System-Bus. However, most of these Boards can pick up the information
available on the System-Bus (PPS pulse, DCF77 pulse (1 Hz)) and transmit this in a hard-
ware format specific to the Board.
8.3
Function Boards Summary
In principle all the Function Boards presented here can be retrofitted by the customer, pro-
vided that suitable slots are available in the System. However, for certain functionalities
some boards require system-internal wiring.
The following summary describes the Function Boards that are currently available and the
customer retrofit information:
Function Boards for System-Bus (max. 2 Boards per System possible)
7271/7272
LAN Board for NTP/SINEC H1 LAN BUS
- Suitable for retrofit
7265
IRIG-B Output Board
- Suitable for retrofit
7266
IRIG-B Output Board
- Suitable for retrofit
7406
Slave Clock Board
- limited suitability for retrofit
(external line voltage feed required)
7530
Frequency Output Board
- Suitable for retrofit (
max. 1 Board per System
)
7112
Optical Coupler Board for Pulse Output
- Suitable for retrofit
7121
Relay Board for Pulse Output
- Suitable for retrofit
To expand 6844(RC) Systems with
Function Boards for System-Bus
, a
slot with Bus-Bridge Boards must be available for each Board.