Specifications

C•CURE apC/L Technical Manual

Connecting the apC/L to the Host

2-13

To increase the distance between the host and the apC/L, you can use

modems, line drivers, or other communications devices. The next two

sections describe RS-232C and RS-485 connections.

RS-232C For RS-232C transmission, follow these steps:

1. Use twisted, shielded 22 AWG (0.325 mm) Belden #9855.

2. Connect the cable shield to the apC/L chassis ground.

The apC/L can be no further than 50 ft. (15 m) from the host, unless

you extend this distance with a modem, line driver, or other

communications device. Connect the apC/L directly to the host as

shown in Table 2.6.

Note You must configure jumpers W9-W14 on the apC/L for the

communications protocol being used. For host communication

using the RS-232C communication protocol, set jumpers W9-

W14 to the B position. See “Setting apC/L Jumpers” on page 6-7

for further information on jumper settings.

Note Connect the apC/L chassis to a proper ground only at one end.

Table 2.6 apC/L Connection to Host PC

apC/L Host

apC/L Pin apC/L Signal DB-25

DB-9

Host Signal

P10-1 Data transmit (TX) 3 2 Data receive (RX)

P10-4 Data receive (RX) 2 3 Data transmit (TX)

P10-5 Ground (GND) 7 5 Ground (GND)

27C1024

apcl.bk Page 13 Monday, May 15, 2000 3:21 PM