28: AS-I
NTERFACE
M
ASTER
C
OMMUNICATION
28-2
« FC4A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
»
AS-Interface System Requirements
Master
The AS-Interface master controls and monitors the status of slave devices connected to the AS-Interface bus.
Normally, the AS-Interface master is connected to a PLC (sometimes called ‘host’) or a gateway. For example, the
Micro-
Smar t
AS-Interface master module is connected to the
MicroSmart
CPU module.
The FC4A
MicroSmart
CPU module can be used with one AS-Interface master module to set up one AS-Interface net-
work.
The AS-Interface master module can connect a maximum of 62 digital I/O slaves. A maximum of seven analog I/O slaves
can also be connected to the AS-Interface master module (compliant with AS-Interface ver. 2.1 and analog slave profile
7.3).
Slaves
Various types of slave devices can be connected to the AS-Interface bus, including sensors, actuators, and remote I/O
devices. Analog slaves can also be connected to process analog data.
Slaves are available in standard slaves and A/B slaves. Standard slaves have an address of 1 trough 31 in the standard
address range. A/B slaves have an address of 1A through 31A in the standard address range or 1B through 31B in the
expanded address range. Among the A/B slaves, slaves with an address of 1A through 31A are called A slaves, and slaves
with an address of 1B through 31B are called B slaves.
•
The AS-Interface master module cannot be connected to the all-in-one 10-I/O and 16-I/O type CPU
modules.
•
One AS-Interface master module can be connected to the FC4A
MicroSmart
CPU module. If more
than one AS-Interface master module is connected, an error occurs and special data register D8037
(quantity of expansion I/O modules) stores error code 40 (hex).
•
Normally, a maximum of four expansion I/O modules can be connected to the all-in-one 24-I/O
type CPU module. But when an AS-Interface master module is connected, only a total of three
expansion modules can be connected, including the AS-Interface master module. Do not connect
more than three expansion modules due to the amount of heat generated. If more than three expan-
sion modules, including the AS-Interface master module, are connected, an error occurs and special
data register D8037 (quantity of expansion I/O modules) stores error code 20 (hex).
•
Similarly, slim type CPU modules can normally connect a maximum of seven expansion I/O mod-
ules, but can connect a maximum of six expansion modules including one AS-Interface master mod-
ule. If more than six expansion modules, including the AS-Interface master module, are connected,
an error occurs and special data register D8037 (quantity of expansion I/O modules) stores error
code 20 (hex).
•
The AS-Interface master module can connect a maximum of seven analog I/O slaves. When more
than seven analog I/O slaves are connected, the AS-Interface system will not operate correctly.
AS-Inter face Master Module
FC4A-AS62M
One AS-Inter face master module
can be mounted.
Applicable FC4A
MicroSmar t CPU Modules
FC4A-D20RK1
FC4A-D20RS1
FC4A-D40K3
FC4A-D40S3
Caution
Содержание FC4A-C10R2
Страница 1: ...FC4A SERIES Micro Programmable Logic Controller User s Manual FC9Y B812 ...
Страница 6: ...PREFACE 4 FC4A MICROSMART USER S MANUAL ...
Страница 94: ...2 MODULE SPECIFICATIONS 2 74 FC4A MICROSMART USER S MANUAL ...
Страница 184: ...6 ALLOCATION NUMBERS 6 20 FC4A MICROSMART USER S MANUAL ...
Страница 218: ...8 ADVANCED INSTRUCTIONS 8 8 FC4A MICROSMART USER S MANUAL ...
Страница 240: ...11 BINARY ARITHMETIC INSTRUCTIONS 11 8 FC4A MICROSMART USER S MANUAL ...
Страница 244: ...12 BOOLEAN COMPUTATION INSTRUCTIONS 12 4 FC4A MICROSMART USER S MANUAL ...
Страница 252: ...13 SHIFT ROTATE INSTRUCTIONS 13 8 FC4A MICROSMART USER S MANUAL ...
Страница 274: ...15 WEEK PROGRAMMER INSTRUCTIONS 15 8 FC4A MICROSMART USER S MANUAL ...
Страница 378: ...22 DUAL TEACHING TIMER INSTRUCTIONS 22 4 FC4A MICROSMART USER S MANUAL ...
Страница 386: ...23 INTELLIGENT MODULE ACCESS INSTRUCTIONS 23 8 FC4A MICROSMART USER S MANUAL ...
Страница 408: ...24 ANALOG I O CONTROL 24 22 FC4A MICROSMART USER S MANUAL ...
Страница 426: ...26 COMPUTER LINK COMMUNICATION 26 6 FC4A MICROSMART USER S MANUAL ...