
B–63783EN/01
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
101
Fixed addresses directly supervised by the CNC (for FS15i/150i)
ADDRESS 7 6 5 4 3 2 1 0
X0006 *ESP
X0008 AE2 AE1
X0011 SKIP1
When DI addresses are allocated in units of 16 bytes, starting at X0005
X0005
X0006
X0007
X0020 (DO alarm detection)
X0008
X0009
X0010
X0011
X0012
X0013
X0014
X0015
X0016
X0017 (for 1st MPG)
X0018 (for 2nd MPG)
X0019 (for 3rd MPG)
Basic module
Basic module
Extension
module 1
Extension
module 2
Extension
module 3
Extension
module 1
DI space map
*ESP fixed signals
*AEn fixed signal
SKIP1 fixed signal
Use one basic module in a minimum configuration. Use expan-
sion modules 1, 2, and 3 as required. In this case, it is impossible
to use the fixed AEn or SKIP1 signal, or the MPG interface in ex-
pansion module 1. However, it is possible to use the fixed *ESP
signal in the basic module in a minimum configuration by assign-
ing it to the address permanently set for 24 V common.
DO (output signal) alarm detection
The DO driver of the I/O module is capable of detecting an overcurrent
and measuring its own temperature. If an accident, such as the connecting
of the cable to ground, causes an abnormal increase in the load current or
in the driver temperature, a protection circuit, which is provided for each
DO driver (1 byte), is activated and keeps the DO signal for the relevant
1 byte in the OFF state until the cause of the problem is eliminated. Even
if this occurs, the CNC and I/O module continue operating. The DI
address (Xm+15) identifies the DO driver which has detected the alarm.
The following table shows the correspondence between the DI address
(Xm+15) bits and the DO addresses. Bit value “1” indicates that the
corresponding DO driver has detected an alarm. The contents of the
Xm+15 area can be checked by using the DGN screen of the CNC or by
performing alarm processing for the area in advance by using Ladder.
This helps alarm detection and recovery.