GE GFK-0787B Configuring 16-Circuit and 32-Circuit Discrete DC Blocks, Device, Serial bus

6

Configuring 16-Circuit and 32-Circuit Discrete DC Blocks

The table below lists configuration parameters for 16-circuit and 32-circuit discrete blocks. Configuration options with special requirements in GMR systems are described after the table. Configuration options that are not changed for GMR systems are not described here. Note that blocks do not prevent selecting incorrect parameters for a GMR system. It is important to configure blocks appropriately for GMR use.

Feature	Circuit or	Factory	Selections
	Block	Setting
DeviceNumber	Block	null	0 to 31 (a number must be selected)
ReferenceAddress	Block	none	Depends on host CPU type
BlockI/OType	Block	input	input,output,combination
Baud Rate	Block	153.6std	153.6 std, 153.6 ext, 76.8, 38.4 Kbd
Pulse Test for Outputs	Block	enabled	enabled,disabled
Input Filter Time	Block	20mSec
(16±ckt)			5±100mSec
(32 ckt)			1±100mSec
CircuitI/OType	Circuit	input	input, output, tristate input*
Report Faults	Circuit	yes	yes, no
Hold Last State	Circuit	no	yes, no
Output Default State	Circuit	off	on, off
Detect No Load*	Circuit	yes	yes, no
Overload Shutdown*	Circuit	yes	yes, no
BSM Present	Block	no	yes, no
BSMController	Block	no	yes, no
Output Default Time	Block	3 bus scans	(for bus redundancy) 2.5 or 10 sec
RedundancyMode	Block	none	none, hot standby, duplex, GMR
Duplex Default	Block	off	on, off

*Available only with 16±circuit blocks.

Device	In a triple-redundancy GMR system, serial bus addresses 29 ± 31 are
Number	reserved for the bus controllers. By convention, serial bus address 0 is
(serial bus	often used for the Genius Hand-held Monitor. The serial bus addresses
address)	assigned to the blocks must match those entered using the GMR
	Configuration Software. Therefore 1±28 are available for blocks.

All the blocks in an input group must be configured to use the same serial bus address. In a 4-block output group, three of the blocks (one each on bus A, B, and C) use the same serial bus address. The fourth block, which must be located on either bus A or bus B, must be assigned a different serial bus address.

Reference All blocks in the same output group must use the same reference

Address address. However, blocks in an input group each have a unique address, as explained on page 6-37. Refer to the reference address assignments made using the GMR Configuration Software when assigning addresses to blocks. Reference addresses must be assigned on 8-bit boundaries.

The system may include individual blocks that are not set up for redundancy.

GFK-0787B Chapter 6 Configuration 6-51