NCR 7870 manual Determining Communications Protocol

4-10 Chapter 4: Installation

Determining Communications Protocol

Use the following procedure to determine the communications protocol programmed in your NCR 7870.

1.Apply power to the NCR 7870.

2.Scan the Diagnostic Mode tag -- must be first tag scanned after applying power.

3.Scan the Hex 3 tag. The good read tone for this tag sounds (three beeps).

If the NCR 7870 has the Voice feature enabled, the communications protocol is given audibly. If the Voice feature is not enabled, the Status Indicator flashes green and the tone beeps, identifying the communication protocol.

Tone	Communications Protocol	Hex Code
1 short, high-	OCIA NCR Short	100
pitched beep
1 beep	OCIA NCR Long	101
2 beeps	IBM 468x/9x Port 4A (Slot Scanner)	102
3 beeps	IBM 468x/9x Port 4B (HHBRC)	103
4 beeps	IBM 468x/9x Port 4B (HHBCR)	104
6 beeps	RS-232	105
7 beeps	OCIA Single Cable	106
8 beeps	OCIA NCR Dual Cable	107
11 beeps	Casio 4-Bit, Parallel, Dual Cable	10A
12 beeps	IBM 1520 (BRC)	10B
13 beeps	TEC 4-Bit, Parallel, Dual Cable	10C

4. Remove power from 7870.