Schrack Technik 301 series User manual

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User’s manual

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Thank you for choosing a product from the MultiCOM range.
The accessories described in this manual are high quality products, rigorously
designed and built for optimal performance.
This manual contains detailed instructions on how to use and install the product.
©Reproduction of any part of this manual without the prior consent of the manufacturer strictly prohibited.
For the purpose of improving it, the manufacturer reserves the right to modify the product described herein
at any time and without notice.
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This equipment must be used only for the purpose for which it was expressly
designed. Any other use is to be considered improper and therefore dangerous. The
manufacturer may not be held liable for any damage caused by improper, incorrect
and unreasonable use.
In case of failure and/or unsound operation of the equipment, refrain from making any
attempt to repair it yourself but instead contact your local service centre.

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OVERVIEW 4
INSTALLATION 5
OPENING THE PACK AND CHECKING CONTENTS 5
COMMUNICATION PORT SERIAL 1 7
COMMUNICATION PORT SERIAL 2 7
CONFIGURATION 8
TERMINATION RESISTOR OF THE RS-485 BUS 10
INSTALLATION OF MULTICOM 301 10
INSTALLATION OF MULTICOM 302 10
TYPICAL INSTALLATION 11
FIRMWARE UPGRADING 11
DATA SHEET 12
SIGNALS OF THE CONNECTORS 12
MODBUS/JBUS PROTOCOL 13
SUPPORTED FUNCTION 13
TABLES OF STATES,MEASUREMENTS,NOMINAL DATA AND COMMANDS 13
COMMANDS CODES 16

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MultiCOM 301 / 302 is a device that provides users with two independent serial ports
(SERIAL 1 and SERIAL 2) for monitoring of the UPS, using different communication
protocols. The accessory is compatible with UPS that use the communication
protocols GPSER and SENTR (PRTK: GPSER1…, SENTR1…).
MultiCOM 301 is an accessory external to the UPS which is connected to the UPS via
serial cable; MultiCOM 302, on the other hand, is an expansion card to be inserted in
a slot in the UPS (only on models supporting it) as indicated in the figure below. The
two products have exactly the same features and the descriptions found in this manual
apply to both products (where not otherwise specified).
A - “SERIAL 2” port
B - Signalling LEDs:
GREEN: serial line “SERIAL 1” active
YELLOW:serial line “SERIAL 2” active
C - “SERIAL 1” port
D - Power supply connector
E - Connector for connection to the UPS
NOTE: the LEDs, which normally are lit, flash at irregular intervals to indicate the
flow of data on the line.
ED
C
BA CA
B
UPS
MultiCOM 301 MultiCOM 302

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OPENING THE PACK AND CHECKING CONTENTS
After opening the package, first proceed to check its contents.
The pack must contain:
MultiCOM 301
External power supply
12V D.C. 0.3A (1)
Serial cable RJ45-DB9 (3)
MultiCOM 302
Serial cable DB9-DB9 (2)
CD-Rom
OR

(1) For MultiCOM 301 only
(2) Cable type: null-modem.
To be used for connection of the “SERIAL 1” port (cable length: 2 m)
(3) To be used for connection of the “SERIAL 2” port (cable length: 2 m)

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COMMUNICATION PORT SERIAL 1
The SERIAL 1 port offers an RS-232 serial line through which the UPS can be
monitored using the following protocols:
Protocol
Baud Rate [bps]
Parity
Stop Bit
GPSER
1200
No Parity
1
COMMUNICATION PORT SERIAL 2
The SERIAL 2 port offers an RS-485 Half-Duplex serial line or an RS-232 serial line
through which the UPS can be monitored using the following protocols:
Protocol
GPSER
MODBUS / JBUS RTU
Baud Rate [bps]
1200
2400
4800
9600
19200
38400*
57600*
Parity
No Parity
Even
Odd
Stop Bit
1
2
* Only with Firmware version 01.05 or higher.
NOTE: The values in bold type indicate the default configuration.
Where it is the GPSER protocol that is used on the SERIAL 2 port:
In RS-232 configuration, the device address must obligatorily be set to zero
In RS-485 configuration, the device address must NOT be set to zero (see
slave address configuration)

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CONFIGURATION
Through the MultiSetup.exe program, which is found on the CD-Rom supplied, you
can configure the communication parameters of the SERIAL 2 port and set the
protocol to be used by the UPS. To use the program, connect the SERIAL 1 port to
any serial port of the PC by means of the null-modem cable provided. To make the
chosen configuration effective, the accessory must be powered down and then
powered up.
The SERIAL 2 port can be set as an RS-232 or RS-485 Half Duplex port by taking
suitable action on the jumpers JP10, JP11, JP12, JP13 as indicated in the table below.
MultiCOM 301
MultiCOM 302
JP1
CLOSED
NOT FITTED
JP2
JP3
NOT FITTED
CLOSED
JP4
JP5
NOT FITTED
JP6
OPEN
JP7
JP8
JP9
JP10
RS-485: The 2 low pins closed (232 silk-screen print side) [DEFAULT]
RS-232: The 2 high pins closed (232 silk-screen print side)
JP11
JP12
JP13
JP14
OPEN
JP15
NOT FITTED
JP16
JP17
Soldered jumper
CLOSED OPEN NOT FITTED
Jumper with 2 pins (JP1…JP9):graphic example of the various setting possibilities

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To choose the slave address from 1 (default value) to 31, set the DIP-switch as
indicated in the table that follows (0=OFF, 1=ON)
SLAVE ADDRESS
DIP 1
DIP 2
DIP 3
DIP 4
DIP 5
0
0
0
0
0
0
1 (DEFAULT)
1
0
0
0
0
2
0
1
0
0
0
3
1
1
0
0
0
4
0
0
1
0
0
5
1
0
1
0
0
6
0
1
1
0
0
7
1
1
1
0
0
8
0
0
0
1
0
9
1
0
0
1
0
10
0
1
0
1
0
11
1
1
0
1
0
12
0
0
1
1
0
13
1
0
1
1
0
14
0
1
1
1
0
15
1
1
1
1
0
16
0
0
0
0
1
17
1
0
0
0
1
18
0
1
0
0
1
19
1
1
0
0
1
20
0
0
1
0
1
21
1
0
1
0
1
22
0
1
1
0
1
23
1
1
1
0
1
24
0
0
0
1
1
25
1
0
0
1
1
26
0
1
0
1
1
27
1
1
0
1
1
28
0
0
1
1
1
29
1
0
1
1
1
30
0
1
1
1
1
31
1
1
1
1
1
To choose a value greater than 31, you have to select a Base Address (0-default-, 32,
64, 96, 128, 160, 192, 224) using the software MultiSetup.exe.
Slave Address = Base Address + [DIP-switch configuration]
NOTE (only for MultiCOM 301 model): For access to the DIP-switches and to the
jumpers, disconnect the power supply connector and the serial cables, take out the
four screws on the bottom of the device and remove the wrap-around tape.

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TERMINATION RESISTOR OF THE RS-485 BUS
The device comes with the termination resistance already fitted inside (Rt=120Ω). To
connect this resistance, take action on the DIP-switch no. 6.
dip switch n° 6 ON → Rtconnected
dip switch n° 6 OFF → Rtnot connected [DEFAULT]
INSTALLATION OF MULTICOM 301
1. Connect the UPS SERIAL port of the device to the UPS serial port using the
cable provided with the UPS.
2. Connect the null-modem serial cable DB9-DB9 to the SERIAL 1 port.
3. Connect the RS-485 network or DB9-RJ45 serial cable to the SERIAL 2 port.
4. Connect the power supply to the device.
NOTE: the power supply must be connected to an outlet protected by UPS.
INSTALLATION OF MULTICOM 302
1. If the UPS is provided with the maintenance by-pass and supply of power to the
load must not be interrupted, activate it by following the instructions in the UPS
user’s manual.
2. Switch off the UPS.
3. Take the cover off the expansion slot by removing the two securing screws.
4. Take off the central part of the cover by removing the junction points.
5. Insert MultiCOM 302 in the slot.
6. Put the cover back on and tighten the two screws.
7. Connect the null-modem serial cable DB9-DB9 to SERIAL 1.
8. Connect the RS-485 network or the serial cable DB9-RJ45 to SERIAL 2.
9. Switch the UPS on again and remove the maintenance by-pass (if activated
previously).