Allocating I/O Data; Data Allocation For Word Slave Units - Omron CRT1 - 10-2009 Operation Manual

Allocating I/O Data

Alarm Status Area
5-2

Allocating I/O Data

5-2-1

Data Allocation for Word Slave Units

Bit Content
14 Reserved
15 Reserved
The Digital I/O Slave Unit's Alarm Status Area contains the following 16 bits.
These bits indicate serious errors in the Unit.
Bit Content
0 Reserved
1 EEPROM Data Error Flag
OFF: Normal
ON: Error occurred
2 Reserved
3 Reserved
4 Reserved
5 Reserved
6 Reserved
7 Reserved
8 I/O Power Supply Status Flag 1
OFF: I/O power is ON
ON: I/O power is not ON.
9 I/O Power Supply Status Flag 2
OFF: I/O power is ON
ON: I/O power is not ON.
10 Reserved
11 Reserved
12 Operation Time Configuration Flag
OFF: Normal
ON: Error
13 Reserved
14 Reserved
15 Reserved
Input and output areas in I/O memory in the Master Unit are allocated to the
I/O data of Word Slave Units in a CompoNet Network. Node address areas
are allocated in order of node addresses for Slave Units of the same type. In a
CompoNet Network, Units are allocated node address areas of the size
required for each Unit, based on the node address set for the Unit.
Word Slave Units are allocated node address areas in units of 16 points (one
word).
• Units with 8 inputs or outputs are allocated one word (the node address
set for the Unit).
• Units with 16 inputs or outputs are allocated one word (the node address
set for the Unit).
• Units with 16 I/O points (8 inputs and 8 outputs) are allocated two words
(the node address set for the Unit). The data is allocated to the lower
bytes of the words, and the upper bytes remain unused.
Section 5-2
Description
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Description
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Turns ON when there is an error in
the EEPROM data.
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Turns ON when I/O power is not
being supplied.
Turns ON when I/O power is not
being supplied to the Expansion Unit.
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Turns ON when a threshold value is
set for the operation time monitor
function between a Digital I/O Slave
Unit and Expansion Unit if an Expan-
sion Unit is not connected.
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