Eaton Electrical 34003991EN/EB 2 RS485 link configuration and connection, 2.1 RS485 connection

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7.2.2 RS485 link configuration and connection

7.2.2.1 RS485 connection

The EIA RS485 link, 2 wires or 4 wires, must be polarized at a unique point of the link and must be adapted at both ends for a good working.

Normally, the master of the network sets the polarity of the line. The INMC card is a slave equipment and don’t have polarisation resistor.

The two ends of the line must be terminated. Allow for 1 or 2 terminators to avoid mismatching the line when any equipment at the end of the line is disconnected.

The next figure gives the detail of the RS485 connector and the internals drivers:

Pin number

Function

1

R- : Receiver - (input)

2

R+ : Receiver + (input)

3

T- : Transmitter - (output)

4

T+ : Transmitter + (output)

5

0 V

Important notes:

Use twisted pair cable (cable specification 0.3mm2 and capacitance 42pF/m)

The transmission range will increase if a cable with lower capacitance and larger diameter is used. Use shielded cable in heavy industrial environments.

Network Management Card – User Manual

34003991EN/EB

Page 80/118

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Contents Network Management Card Contents Industrial Network Management Card Inmc Option Configuration VIA RS232Server Protection Jbus Table AppendicesMGE MIB GlossaryEaton Network Solution General PresentationConnecting the UPS to the Ethernet network Protection of the computers/serversSupervision of the UPSs over the network ConnectionHow to connect UPS / agent / network Setting up the protectionPresentation of the Network Management Card NMC Compatibility with UPSsEnvironment Sensor option Direct sending of E-mailSending text messages SMS Technical data Hardware characteristicsConfiguration EMC CompatibilityAdministration NetworkEnvironment sensor List of ports usedMIB Management Information Base Default parameters BOOTP/DHCPIndications InstallationUnpacking and check on contents ACT Installation in the UPSLED Sensor installation option Eaton Network Management Card ConfigurationConfigure IP parameters Your network is equipped with a Dhcp server Test after configuration Your network is not equipped with a Dhcp serverSupervision and administration by browser Optimising the performance of your browserUPS UPS propertiesUPS zone general information on the UPS 23/118 24/118 25/118 26/118 UPS status zone Essential information Viewing the modules 29/118 Viewing the alarms Alarm table for modular UPS Viewing the About your UPS window On-line help UPS control 35/118 36/118 UPS weekly schedule programming Shutdown parameters For the main outlet Master by default Measurements Event log System log Notification Email Notification44/118 Mail Message Settings 46/118 Configuration Network settings 49/118 System 51/118 Notified Applications 53/118 Central shutdown configuration Access control 55/118TLS Date and time 58/118 Firmware upload Characteristics Environment Sensor optionEnvironment Status Environment Settings Display in the list of current alarms 4 Log Shutdown criteria managed by the Network Management Card Server protectionSet-up of the shutdown parameters Utility failure Start of the shutdown sequence Shutdown when backup time is less than Shutdown durationLoad shedding or sequential shutdown Controlled outletsProtection of a server connected to a controlled outlet Different server and UPS shutdown sequences Sequential startup70/118 Shutdown Duration SettingsShutdown management with 2 NMC boards Configuration via RS232 Choice 1 Read Network settings Choice 1 Restart / ResetChoice 2 Network Configuration Choice 2 Modify Network settings Choice 3 Set Ethernet speedChoice 3 Lost password / Set Login Password to Default Choice 4 Return to Default Configuration Overview Functions Industrial Network Management Card Inmc optionPresentation Technical characteristics JBUS/MODBUSInstallation 1 RS232 link configuration and connection2 RS485 link configuration and connection 2.1 RS485 connection81/118 2.2 RS485 link configuration for 2 wires connexion 83/118 2.3 RS485 link configuration for 4 wires connexion 85/118 Configuration of the JBUS/MODBUS communication parameters Choice 1 Display Jbus settings Choice 2 Modify Jbus settingsChoice 5 Return to Jbus Default Configuration Choice 3 Display Jbus diagnosticsChoice 4 Reset Jbus diagnostics Choice 6 Display Jbus frames Additional Web pages Status table Jbus tableData for Pulsar 700 / 1000 Measurements table Data for Pulsar M 2200 94/118 Data for Pulsar MX 4000 / 5000 / 10000 and EX 5 / 7 / 11 RT 96/118 Data for Pulsar MX frame 15 Modular fault table 99/118 100/118 101/118 Sensor data 5.1 Status table103/118 Read of the personalization table Other data Appendices Tables of alarms and eventsTable of alarms UPS OK If the UPS is modular UPS, for each module Table of UPS events 110/118 Table of system alarms Snmp objects MGE MIB113/118 1yes 2no 1,4,1 Table des Traps MIB Trap116/118 Network Management Proxy GlossaryMIB Management Information Base NMS Network Management Station Snmp NSM Network Shutdown ModuleSnmp Simple Network Management Protocol Smtp Simple Mail Transfer Protocol