KEPCO KLN 750W Series, Firmware Version 1.60 to 1.6x - Manual (Page 22)

2-2
KLN 750W 032614
FIGURE 2-2. RS-485 PORT
TABLE 2-2. RS-485 PORT INPUT/OUTPUT PIN ASSIGNMENTS
PIN
(FIGURE 2-2)
SIGNAL NAME FUNCTION
G Ground Reduce external interference
+ +RX Connect to +TX of computer and/or +RX of next unit on RS-485 bus (see Figure 2-9).
– –RX Connect to –TX of computer and/or –RX of next unit on RS-485 bus (see Figure 2-9).
NOTE: Connect 120 Ohm termination resistor across + and – of last unit connected to RS-485 bus (furthest from computer)
See PAR. 2.7.2.
TABLE 2-3. GPIB (IEEE 488) PORT INPUT/OUTPUT PIN ASSIGNMENTS
PIN SIGNAL NAME FUNCTION
1 D I 01 I/O Line
2 D I 02 I/O Line
3 D I 03 I/O Line
4 D I 04 I/O Line
5 EOI End or Identify
6 DAV Data Valid
7 NRFD Not Ready for Data
8 NDAC Not Data Accepted
9 IFC Interface Clear
10 SRQ Service Request
11 ATN Attention
12 SHIELD Shield
13 D I 05 I/O Line
14 D I 06 I/O Line
15 D I 07 I/O Line
16 D I 08 I/O Line
17 REN Remote Enable
18 GND Ground (signal common)
19 GND Ground (signal common)
20 GND Ground (signal common)
21 GND Ground (signal common)
22 GND Ground (signal common)
23 GND Ground (signal common)
24 LOGIC GND Logic Ground