Chase Research IOLAN+ User Manual download pdf

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48 Queens Road, Coventry, CV1 3EH, UK.

Tel: (024) 76 231 440. Fax 231 451.

TIME+ Technical Bulletin.

TIME+ © Clear Systems Ltd 1989-2000 for Time and Attendance, Flexitime, Access Control and Job Tracking.

net_serv1.doc

TimeClock Network Serial Servers.

When TimeClocks are connected to a TIME+ UNIX/NT system via network serial servers there are some special processes called

daemons/tasks/ervices used. These are usually started automatically by specially configured commands in the system’s startup

scripts and then run continually.

On UNIX systems each daemon creates a pair of special devices, called master and slave pseudo devices, which the TIME+ -

TimeClock comms program can connect to as if there was a physical serial device. Depending on the particular UNIX / network /

database implementation the details may differ.

One serial server port is needed per TimeClock Line Driver. This may be a dedicated port on an existing terminal server Annexe,

Chase lolan, Spider etc) or the port on a dedicated serial server supplied for the TimeClocks Axel AX4010, Lantronix MSS1/2

serial server). In either case the IP address of the serial server should be in the /etc/hosts file and the IP port (i.e. service) of the

comms port known or specially configured (e.g. 3001 is the IP port for the serial port of a Lantronics MSS1).

A typical daemon command is “/usr/csl/iolan/iolandn -xl –t10 -o -d rc mss3 3001 mss3”. where:

• iolandn is the name of the daemon executable

• -xl -tl0 -o are operational parameters

• -d rc defines the device name to be used e.g. /dev/ttyrc

• mss3 is the /etc/hosts name of the serial server which defines the IP address

• 3001 is the IP port of the serial port to use

• mss3 is a logical name for the daemon’s device used in error logging etc

This may generate output:

$ /usr/csl/iolan/iolandn -xl -t10 -o -d rc mss3 3001 mssl

+--------------------------------------------+

I IPS software version 1.2 |

| |

| This software is licensed |

I solely for ose with Chase |

| Research products. All other |

| uses are strictly prohihited. |

| Chase Research plc |

+--------------------------------------------+

Other such daemon services are hpnptyd, rtelnet etc.

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Clear Systems Limited 48 Queens Road, Coventry, CV1 3EH, UK. Tel: (024) 76 231 440. Fax 231 451. TIME+ Technical Bulletin. TIME+ © Clear Systems Ltd 1

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Clear Systems Page 2 The daemon may update an error/event log - the command to check it may vary: $ tail /etc/iolog mssl3 3001: receiving data from

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Clear Systems Page 3 The diagnostic commands, apart from the daemon start-up, may be put into a bespoke user menu. TIMECLOCK NETWORK CGMMS 12:00:07 T

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Clear Systems Page 4 NT Systems DialOut/IP This is used to create one or more com-port devices that are virtual connections to the IP address and IP p

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Clear Systems Page 5 GENERAL RULES FOR TROUBLE_SHOOTING Think of the daemons/processes as uniquely disposable bits of "wire" - similar to a

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Clear Systems Page 6 TIME+ TimeClock Ports Configuration. TIME+ talks to TimeClocks connected to connections via PORTS. A port is defined in the item

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