GMBHR168 Datasheet, PDF (50/70 Pages) List of Unclassifed Manufacturers – Mini BLOCK Housing 16 opto inputs, 8 Relay outputs

grifo^®
ITALIAN TECHNOLOGY
SERIAL COMMUNICATION SELECTION
Serial line of GMB HR168 can be buffered in RS 232, RS 422, RS 485, Current Loop or TTL.
By hardware can be selected which one of these electric standards is used, through jumpers
connection (as described in the previous tables) and drivers installation.
By software the serial line can be programmed to operate with all the standard physical protocols,
in fact the bits per character, parity, stop bits and baud rates can be decided by installing the opportune
hardware on socket ZC1. In the following paragraphs there are all the information on serial
communication configurations.
Some devices needed for RS 422, RS 485 and Current Loop configurations are not mounted on the
board in standard configuration; this is why each fist non-standard (non-RS 232) serial configuration
for line A must be always performed by grifo^® technicians.
This far the user can change in autonomy the configuration following the informations below:
- HW SERIAL LINE IN RS 232 (default configuration)
J3,J4
= not connected
Hardware ZC1
J5
= indifferent
IC10
J6
= position 2-3
IC11
J7
= position 2-3
IC12
J8
= position 2-3
IC8
= serial line in RS 232 (#)
= no device
= no device
= no device
= no device
- HW SERIAL LINE A IN CURRENT LOOP (option .CLOOP)
J3,J4
= not connected
Hardware ZC1 = serial line TTL (#)
J5
= indifferent
IC10
= no device
J6
= position 1-2
IC11
= no device
J7
= position 1-2
IC12
= driver HP 4200
J8
= position 1-2
IC8
= driver HP 4100
Please remark that Current Loop serial interface is passive, so it must be connected an active
Current Loop serial line, that is a line provided with its own power supply, like described in
figures 13÷15. Current Loop interface can be employed to make both point-to-point and multi-
point connections through a 2-wires or a 4-wires connection.
- HW SERIAL LINE A IN RS 422 (option .RS 422)
J3,J4
= (*)
Hardware ZC1
J5
= position 2-3 (**) IC10
J6
= position 1-2
IC11
J7
= position 1-2
IC12
J8
= position 1-2
IC8
= serial line TTL (#)
= driver SN 75176 or MAX 483
= driver SN 75176 or MAX 483
= no device
= no device
Status of signal DIR (software managed with Mini Module signal selected with J10), allows
to enable or disable the transmitter:
DIR
= low level
= logic state 0 -> transmitter enabled
DIR
=high level = logic state 1 -> transmitter disabled
In point-to-point connections, signal DIR can be always kept low (trasnmitter always enabled),
while in multi-point connections transmitter must be enabled only when a transmission is
requested.
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GMB HR168 Rel. 5.00