UBI EasyCoder 501, Техническое руководство

Страница: 90 / 106

90
UBI EasyCoder 501 – Technical Manual
20 mA Current Loop
on "uart1:", cont'd.
INTERFACES, cont'd.
On the CPU board, check:
■ Opto-couplers must be fitted on IC-205 and IC-206. These are
not included as standard and must be ordered separately.
■ Jumper must be fitted on middle position of P-202 to select 20
mA current loop.
❑ RS 422 circuit fitted on IC-207 (optional), RS 232C circuit fitted
on IC-200 (standard) and jumpers fitted on P-204 – P-209 or on
P-200 are of no consequence.
P-203 External 5 Volt:
Jumper fitted co5V to pin 16. Warning! Max. 200 mA.
Be careful not to enable the external 5V unintentionally, which may
cause harm to the terminal, PC or other device connected to this
port!
Cable configuration:
The printer end of the connection cable should have a DB25 female
connector. The computer end of the cable depends on your type of
computer.
The printer's connector contains the following signals:
Pin 9 + 20 mA
Pin 10 – 20 mA
Pin 11 TXD +
Pin 12 TXD –
Pin 13 + 20 mA*
Pin 14 – 20 mA*
Pin 16 + 5V, 200 mA (if jumper fitted on P-203)
Pin 18 RXD +
Pin 25 RXD –
*. In case of printer being active receiver.
Continued!