APG HE693SNP232 Installation instructions

Horner Electric's
SNP to RS232 Adapter
Product Specifications
and Installation Data
User'sManual
forthe HE693SNP232 , HE693SNPCBL and HE693XTADP
RS232SERIALPORTWIRING
TheHE693SNP232SNPtoRS-232Adapterisequippedwithtwoports. The15-pin"SNP"portplugsdirectlyintothe
PLC Programmer Port on the CPU rack power supply. Power to the SNP Adapter is supplied directly from the
programmingport(maximum25mA@5VDC). The9-pinRS-232portconnectstoanyRS-232device. The"pinout"for
theHE693SNP232Adapter serial ports are defined below. The direction indicated is with respect totheadapter.
Pin
Number Signal Name Direction
1, 3, 7 [0V] Ground N/A
2, 5 [+5V] VCC N/A
4 No Connection N/A
6 [CTS-] Clear to Send Input
8 [RTS+] Request to Send Output
9,10 [TXD-] Transmit Data Output
11 [TXD+] Transmit Data Output
12 [RXD-] Receive Data Input
13 [RXD+] Receive Data Input
14 [CTS+] Clear to Send Input
15 [RTS-] Request to Send Output
Pin
Number Signal Name Direction
2 [TXD] Transmit Data Output
3 [RXD] Receive Data Input
5 [GND] Ground N/A
7 [CTS] Clear to Send Input
8 [RTS] Request to Send Output
Thispinout was chosen to allow direct connection (using a straightthrough,or1to1 cable) to the IBM PC/AT. Nearly
ALLoftheIBMcompatiblecomputersequippedwitha9-pinRS232portwillprovideapinoutcompatiblewiththatshown
above.
Table 1. 15-pin Port Table 2. 9-pin Port
12-11-97 MAN0079-05

Cable Diagrams
When connecting the SNP adapter to IBM compatible PCs with hardware handshaking, the following cable interface
shouldbe used.
XT Adapter Pinout
TheXT Adapter can be used onanIBMcompatiblePC which has a 25-pin RS232port. Theinternalwiringof the XT
Adapteris show below.