56
M4RTU/M4 I/O User’s Guide
INSTALLATION AND SETUP
LED INDICATORS
Five LEDs are located on the top of the M4RTU/M4 I/O, in line with the configuration jumpers, as shown in
Figure 3-24. These LEDs perform the functions displayed in Table 3-6 below.
Table 3-6: LED Functions
LED
Indication
RUN
(Processor status)
This indicator shows processor status. When the processor
is functioning normally, the light stays on. When the
processor is powered down, the light goes off. If the light
blinks, it could indicate a processor malfunction or low power
supply voltage.
TX0
(COM0 transmit)
This indicator illuminates whenever COM0 is transmitting
serial data. If the LED fails to illuminate, it could indicate that
the port is idle, a wiring problem exists, or CTS is low.
RX0
(COM0 receive)
This indicator illuminates whenever COM0 is receiving serial
data. If the LED fails to illuminate, it could indicate that the
port is idle or a wiring problem exists.
TX1
(COM1 transmit)
This indicator illuminates whenever COM1 is transmitting
serial data. If the LED fails to illuminate, it could indicate that
the port is idle or a wiring problem exists.
RX1
(COM1 receive)
This indicator illuminates whenever COM1 is receiving serial
data. If the LED fails to illuminate, it could indicate that the
port is idle or a wiring problem exists.
Figure 3-22: LED Indicators on the M4RTU/M4 I/O
Содержание Modular M4RTU
Страница 6: ...6 M4RTU M4 I O User s Guide TABLE OF CONTENTS...
Страница 14: ...14 M4RTU M4 I O User s Guide INTRODUCTION Figure 1 3 M4RTU M4 I O Communications Configurations...
Страница 32: ...32 M4RTU M4 I O User s Guide INSTALLATION AND SETUP Figure 3 3 Installing the Power Supply on the M4RTU M4 I O...
Страница 74: ...74 M4RTU M4 I O User s Guide FIELD WIRING...
Страница 80: ...80 M4RTU M4 I O User s Guide PRODUCT SPECIFICATIONS...
Страница 82: ...82 M4RTU M4 I O User s Guide ADDRESS JUMPER CONFIGURATION...
Страница 86: ...86 M4RTU M4 I O User s Guide UPGRADING RAM AND FLASH EEPROM...
Страница 89: ...M4RTU M4 I O User s Guide 89 WORKSHEETS Figure F 3 M4RTUX I O Extender I O Module Worksheet...
Страница 91: ...M4RTU M4 I O User s Guide 91 WORKSHEETS Figure F 5 Field Wiring Worksheet Example 2...
Страница 94: ...94 M4RTU M4 I O User s Guide WORKSHEETS...
Страница 96: ...96 M4RTU M4 I O User s Guide PRODUCT SUPPORT...