
5 Setting
5.1 DI/DO map on the I/O Link
Basically, terminal type I/O module is allocated a group of DI addresses (16 bytes)
and a group of DO addresses (8 bytes). Up to three hardware expansion modules
can be added or removed as required. The reason for this address allocation is
explained below.
The MPG interface (MPG counter) occupies a DI space from Xm+12 through
Xm+14. These addresses are fixed regardless of whether expansion module 2 or 3 is
used, and Xm+12 through Xm+14 must be allocated as a DI work area to enable
the use of the MPG. Therefore, when using an MPG for the i series CNC, allocate
DI addresses in units of 16 bytes. Do not use the DI space from Xm+12 through
Xm+14 for Ladder; the CNC processes the MPG counter value directly. DI address
Xm+15 is used for detecting overcurrent and overheating alarms that occur in the
IC used in the DO driver. [For details, see the section describing the detection of
DO (output signal) alarms.] This address is fixed regardless of whether expansion
module 2 or 3 is used, and it must be allocated as a work area before it can be used.
When using this area, therefore, allocate DI addresses in units of 16 bytes.
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TITLE
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DESCRIPTION DESIG. DATE
TERMINAL TYPE I/O MODULE
CONNECTING MANUAL
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