Omron SYSMAC CS Series Operation Manual page 30

Specifications and Installation
Transferring Analog I/O
Unit Default Settings to
the CPU Unit
Special I/O The data in for operation is continuously refreshed.
Unit Area
The following types of data are transferred from Analog Input Units to
the CPU Unit: Values scaled in industrial units for process values
and rate-of-change values; alarm contact data, Input Disconnection
Flag data, etc.
Analog output values are transferred from the CPU Unit to Analog
Output Units.
DM Area Data is set in this area. The allocated portion of the DM Area is
divided into the three areas shown below.
Note For details, refer to the explanations for the individual Units.
1) Default block read
command
2) Setting Group 1
(continuously
refreshed area)
3) Setting Group 2
(initial settings area)
Note The ERC indicator on the Unit's front panel will light if an out-of-range setting
is made in either Setting Group1 or 2. The offset from m of the first DM word
containing the out-of-range error will be stored as the Data Range Error
Address in the DM Area in four digits hexadecimal. When an error is made in
Setting Group 1, the ERR indicator will light and the data range error address
will be stored immediately. When an error is made in Setting Group 2, the
ERC indicator will light at the next powerup or Unit restart and the data range
error address will be stored at that time.
When transferring the Analog I/O Unit's default settings to the CPU Unit's DM
Area to be used for operation, store 12345 (3039 Hex) in word m and either
power up or restart the Unit. After the default settings have been transferred,
the value in word m will be automatically returned to 0 (0000 Hex). From that
point onwards, the values stored in the DM Area will be transferred to the Ana-
log I/O Unit for operation at powerup or when the Unit is restarted.
At PC powerup or Unit restarting, the
default data in the Analog I/O Unit can be
transferred back to the CPU Unit.
Beginning word m is fixed. When m is
12345 (3039 Hex), then the data is trans-
ferred from the Analog I/O Unit to the CPU
Unit.
When m is less than 12345 (3039 Hex),
such as 0 (0000 Hex), then data is trans-
ferred from the CPU Unit to the Analog I/O
Unit as usual.
When the PC is ON (even if the CPU Unit is
operating), this area is continuously
refreshed.
This area is refreshed at powerup or restart-
ing.
The area is refreshed regardless of the
CPU Unit's operation mode (i.e., RUN, Mon-
itor, or Program Mode).
Alarm settings, zero/span adjustment val-
ues, and so on, are set here.
Data is transferred once to this area from
the CPU Unit at powerup or restarting.
Input signal types, process value scaling,
alarm supplementary functions, etc., are set
here.
Section 1-4
17