Teledyne M5000B operating instructions RS-232 Signals, RS-232 Sig RS-232 Pin Purpose

1 Introduction Model 5000B

When CRC opens again, zero and span are done, and the sample is being analyzed.

Note: The Remote Bench terminal strip (section 3.6 Part III) provides signals to ensure that the zero and span gas valves will be controlled synchronously.

Range ID Relays: Four dedicated RANGE ID CONTACT relays . The first four ranges are assigned to relays in ascending order—Range 1 is assigned to RANGE 1 ID, Range 2 is assigned to RANGE 2 ID, Range 3 is assigned to RANGE 3 ID, and Range 4 is assigned to RANGE 4 ID.

Network I/O: A serial digital input/output for local network protocol. At this printing, this port is not yet functional. It is to be used in future versions of the instrument.

RS-232 Port: The digital signal output is a standard RS-232 serial communications port used to connect the analyzer to a computer, terminal, or other digital device. The pinouts are listed in Table 2-3.

Table 2-3: RS-232 Signals

RS-232 Sig	RS-232 Pin	Purpose
DCD	1	Data Carrier Detect
RD	2	Received Data
TD	3	Transmitted Data
DTR	4	Data Terminal Ready
COM	5	Common
DSR	6	Data Set Ready
RTS	7	Request to Send
CTS	8	Clear to Send
RI	9	Ring Indicator

The data sent is status information, in digital form, updated every two seconds. Status is reported in the following order:

•The concentration in percent

•The range is use (HI< MED< LO)

•The span of the range 0-100%, etc.

•Which alarm - if any - are disabled (AL-x DISABLED)

2-8: Part I Teledyne Analytical Instruments