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27-1
27: M
ODEM
M
ODE
Introduction
This chapter describes the modem mode designed for communication between the
MicroSmart
and another
MicroSmart
or
any data terminal equipment through telephone lines. Using the modem mode, the
MicroSmart
can initialize a modem,
dial a telephone number, send an AT command, enable the answer mode to wait for an incoming call, and disconnect the
telephone line. These operations can be performed simply by turning on a start internal relay dedicated to each operation.
System Setup
To connect a modem to the
MicroSmart
, install the RS232C communication adapter (FC4A-PC1) to the port 2 connector
on the all-in-one 16- or 24-I/O type CPU module, or mount the RS232C communication module (FC4A-HPC1) next to the
slim type CPU module, and use the modem cable 1C (FC2A-KM1C). To enable the modem mode, select Modem Protocol
for Port 2 using
WindLDR
(
Configure
>
Function Area Settings
>
Communication
). The all-in-one 10-I/O type CPU
module does not have the modem communication capability.
Caution
•
The modem mode provides for a simple modem control function so that the
MicroSmart
can ini-
tialize a modem, dial a destination telephone number, or answer an incoming call. The perfor-
mance of the modem communication using the modem mode depends on the modem functions
and telephone line situations. The modem mode does not prevent intrusion or malfunctions of
other systems. For practical applications, confirm the communication function using the actual
system setup and include safety provisions.
•
While communicating through modems, the telephone line may be disconnected unexpectedly or
receive data errors may occur. Provisions against such errors must be included in the user program.
Modem Cable 1C
FC2A-KM1C
3m (9.84 ft.) long
To RS232C Por t
D-sub 25-pin
Male Connector
D-sub 25-pin Connector Pinouts
Pin
Description
1
FG
Frame Ground
2
TXD Transmit Data
3
RXD Receive Data
4
RTS Request to Send
5
NC
No Connection
6
NC
No Connection
7
SG
Signal Ground
8
DCD Data Carrier Detect
20
DTR Data Terminal Ready
Modem
Mini DIN Connector Pinouts
Description
Pin
Shield
Cover
RTS
Request to Send
1
DTR
Data Terminal Ready
2
TXD
Transmit Data
3
RXD
Receive Data
4
DSR
Data Set Ready
5
SG
Signal Ground
6
SG
Signal Ground
7
NC
No Connection
8
Caution
•
Do not connect the NC (no connection) pin to any line; otherwise, the
MicroSmart
or modem may
be damaged.
•
Modem cables for Apple Macintosh computers cannot be used for the
MicroSmart
.
•
Do not connect the cable to the port 1 or port 2 (RS485); otherwise, the
MicroSmart
or modem
may be damaged.
To Por t 2
RS232C Communication Adapter
FC4A-PC1
16- or 24-I/O Type CPU Module
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 ...