Campbell-scientific MD485 RS-485 Multidrop Interface Uživatelský manuál stáhnout pdf (Strana 12)

MD485 RS-485 Multidrop Interface

Step 1 – Set Up Base MD485

a. Connect serial cable from PC COM port to base MD485 RS-232 port.

b. Plug transformer into AC outlet and plug barrel connector into base

MD485 “DC Pwr” jack. You will see both red LEDs light immediately

for 1 second. Both LEDs then begin to flash once every 2 seconds.

c. Using DevConfig or the MD485 setup menu as explained in Section 3.1.3,

change the active ports of the base MD485 to “RS-232 and RS-485.” All

other options can be left in their default state.

apx

TECHNOLOGIES INC.

CLASS 2 TRANSFORMER

MODEL NO: AP2105W

INPUT: 120VAC 60Hz 20W

LISTED

2H56

E144634

MADE IN CHINA

OUTPUT: 12VDC 1.0A

HICKSVILLE, NEW YORK

RS-232

RS-485

CS I/O

PC Running

LoggerNet or PC400

FIGURE 4. MD485 Basic Point-to-Point Network

Step 2 – Set Up Remote MD485

a. Connect SC12 cable from datalogger CS I/O port to remote MD485

CS I/O port. Current datalogger/wiring panel CS I/O ports apply power to

the remote MD485.

With older dataloggers lacking 12 V on pin 8 (see Table 2), you can

power the MD485 using a Field Power Cable (see above hardware list)

between the datalogger’s 12 V (output) terminals and the MD485’s “DC

Pwr” jack.

TABLE 2. Lacking 12 V on CS I/O Pin 8

EQUIPMENT SERIAL NUMBER

CR500 < 1765

CR7 700X Bd. < 2779

21X < 13443

CR10 Wiring Panels All (black, gray, silver)

PS512M Power Supply < 1712

When you connect power to the MD485 (through the SC12 cable or the

optional Field Power Cable) you should see the power-up sequence of the

red LEDs described in Step 1 (assuming datalogger is powered).

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 67 68

Komentáře k této Příručce

Žádné komentáře

Campbell-scientific MD485 RS-485 Multidrop Interface Uživatelský manuál Strana 12

Komentáře k této Příručce

Související produkty a manuály pro Hardware Campbell-scientific MD485 RS-485 Multidrop Interface