Transcript
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
Ex' Ma Tor The cor
Interface Converte r RS-232 (V.24) / RS-485
Inpc Outl Elec Co n
The RS-485 standard is used when mor e than two participants have to communicate . Converting the point-to-point interface , RS-232 to the bus-capable RS-485 standar d makes it possible to network up to 3 2 terminals via a 2 or 4-wire line . The following tasks can be solved with th e converter : —Coupling an RS-232 master interface to a n RS-485 bus system . —Integrating an RS-232 terminal in a n RS-485 bus system . —Networking of up to 32 RS-232 interface s via the RS-485 standard (provided the y can be addressed) . —Setting up a temporary programming an d parameterizing link between PC (RS-232 ) and PLC or drive regulators, for example , with an RS-485 connection .
via the self-contacting snap-on foot . The manifold configuration options make the device suitable for universal applications : —RS-485 2-wire mode, half-duple x – RS-485 4-wire mode, full-duple x —RS-422 4-wire point-to-point mod e – Transmission rate between 4 .8 kbit/s and 115 .2 kbit/s —Automatic RS-485 transmit/receiv e changeove r The converter can thus be used in al l common RS-485 2 and 4-wire bus systems . Examples of this are : PROFIBUS, MODBUS, PPI (Siemens) , SUCONET-K (Moeller), DH 485 (Alle n Bradley), RACKBUS (Endress & Hauser) , UNI-TELWAY (Telemecanique), J-BU S (Merlin Gerin), RS BUS (Staefa), JETWA Y (Jetter) and many others .
PSM-ME . . . control cabinet modul e The PSM-ME . . . interface converter ca n carry out bidirectional interface conversio n up to 115 .2 kbit/s in a slim design of jus t 22 .5 mm . The device is simply snapped ont o standard EN mounting rails and supplied with 24 V AC or DC . The RS-232 connectio n is made via SUB-D9, the RS-485 fiel d connection is made using pluggabl e COMBICON screw terminal blocks . Th e integrated data indicator displays transmi t and receive data dynamically. A high-grad e 3-way isolation between supply, RS-232 an d RS-485 interface ensures reliabl e decoupling of the potentials with 2kV . Th e integrated surge voltage protection provide s additional protection . Transient interferenc e is discharged effectively to ground potential
PSM plug modules PSM-V24 . . . modules are directly attache d to the 25-pin SUB-D connection of th e RS-232 device interface . It is possible to select from male and female versions (type s . . ./SB and . . ./BB) . The 9/25-pin PSM-KAD. . . adapter cable is available for connecting to 9 pin interfaces . The integrated coding switch permits universal applicability on DTE or DC E interfaces . Data channels TxD/RxD ar e transmitted . The data flow direction (half duplex mode) of the RS-485 interface i s changed over using the RS-232 DTR contro l channel . The following logical allocatio n applies to PSM-V24/ . . ./I modules : • DTR log .1 (> +3 V) = RS-485 transmi t • DTR log . < — 3 V) = RS-485 receive
Master interface connectio n on RS-485 2-wire and 4-wire syste m Master
Networking of RS-232 station s
>
N N
a
Interf, to RS chang Interfi to R S chan g Interfa to RS inverte RS-23
Programming connectio n
RS-232 (V.24)
RS-23 2 (V.24) RS-485 2/ 4-wire
max . 31
max . 32 devices
* I
15 m
tV/
fl/
4
Phoenix Contact
Co n
II
RS-23 2 (V.24)
382
All other plug modules operate with a n inverse control . The plug modules are incorporated in a sturdy and compact aluminum housing an d have a potential separation of 1 kV between the interface sides . 12 V DC power comes from the separat e PSM-NT . . . plug-in power supply unit, or alternatively through the RS-232 interface , pin 18/7 .
RS-232 (V.24)
RS-23 2 _ (V.24 )
RS-48 5
Max. tr e distc ela ric , st vo l Material Connec Ambien Electror • Emitte • Immu r Approva
Explanations : Material of housing see page 439 . Torque value of terminals, see page 441 . The rated cross section (see page 441) refers to untreated conductors without ferrules .
description plug module : PSM - V24
/ RS485 - P
/ S
B
Input interface (device side) Output interface Electrical isolation Connection type input (here : male connector ) Connection type output (here : female connector)
PSM-ME-RS232/RS485-P Housing width 22.5
PSM-V24/RS 485-P/ . . .
AIus
Housing length 8 6 RS 232
SUB - D 9
D 254) D 25 SUB
COMBICON
15 . ..1 8 V DC
} 7 I
p
}+
RS 48 5 D9 SUB +5 V
12 V DC 18 + 7- SGND
C 6
T DDE D
Tx D 2 2 Wlre OFF DIPS
26 DTR S OFF ins ass)>+50 ON (RS022)
I
I
'–O–LO
T(9)
.
RTS 4 CTS 5
(t I Bus Msnsosme M
)T O O Ir 0
_
Tf
Interface converter, for converting RS-232 (V.24 ) toRS-485, with electrical isolation, rail-mountable , flange-over of data direction self-controlling or via RTS/CT S *face converter, for converting RS-232 (V.24 ) 8RS485, with electrical isolation , flange-over of data direction via DTR (see text ) Interface converter, for converting RS-232 (V.24) fRS-485, with electrical isolation , marred change-over of data direction via DT R RS232 cable 9-pin SUB-D fem . conn . to 25-pin SUB-D fern. conn . 9-pin SUB-D fern . conn. to 9-pin SUB-D fem . conn . *pier cable 9-pin SUB-D fern . conn . to 25-pin SUB-D male conn . SSUB plug connector for free assembly of data lines Ng-in power supply unit, for supplying a for 120 V AC pig module for 230 V AC
1,1
3 — Rx D
a
GN D
GN D
PSM-ME-RS232/RS485-P
27 44 41 6
Pcs . Pkt.
Type
Order No .
PSM-V24/RS 485-P/BB/l PSM-V24/RS 485-P/SB/I
276119 8 276145 7
PSM-V24/RS 485-P/BB PSM-V24/RS 485-P/SB
27 87 32 1 27 87 33 4
Pcs. Pkt .
I
27 61 05 9 27 99 47 4 see page 404
PSM-KAD-9SUB25/BS SUBCON . . . PSM-NT-120 AC/15 DC/100 PSM-NT-230 AC/15 DC/100_
27 61 29 5 see page 40 4 I 27 87 45 7 27 67 44 4
Rppy voltage lineal current consumptio n
24 V AC/DC ± 20% approx . 85 mA
15 .. . 18 V DC or 12 V (± 5%) via pin 18/7 approx. 70 mA
84232 interface .Connectio n
in acc. with ITU-T V.28, EIA/TIA-232, DIN 66 259- 1 SUB-D 9 (male )
in acc . with ITU-T V .28, EIA/TIA-232, DIN 66 259- 1 SUB-D 25 (male) or SUB-D 25 (female )
f$485 interfac e •Daladirection change-ove r
acc . to EIA/ITA-485, DIN 66 259- 4 automatic or via RS-232 : RTS/CTS +3 V = RS-485 transmit ; logic can be inverted via DIP switch can be connected : S2, pull up/down 390 S2 1200 m, twisted pai r pluggable COMBICON screw terminal block
acc . to EIA/ITA-485, DIN 66 259- 4 DTR 10 - 3 V = RS-485 transmi t DTR ? + 3 V = RS-485 transmit (with .. ./1 module ) 150 4, can be connected via bridge 7/ 9 1 200 m, twisted pai r SUB-D 9 (female )
2 (1/1), TD, RD; half-duplex (RS-4852-wire) full-duplex (RS-485 4-wire and RS-422 ) 115 .2 kbit/s (NRZ) 1 ) 10 5 % 1_3µs RS-232 // RS-485 // suppl y 2 .0 kV, ms, 50 Hz, 1 min . PA VO, color : gree n 0.2 - 2 .5 mm 2 (AWG 24-14 ) 0°C up to +55° C CE in conformance with EMC guideline 89/336/EE C EN 50 081- 1 EN 50 082- 2
2 (1/1), TO, RD ; half duplex
.transmission rat e tortion lay [cal isolatio n cltage : rial of housing Detection data, screw terminal block s )(Went temperature range Electromagnetic compatibility r Emitled interference Immunity to interference Igeval
9
C 5
1,
L
PSM-V24/RS 485-P/. ..
taneral data Transmission channels
7
(
C 8 DATA (A )
L
PSM-M E- R S 232/R S 485-P
,Terminating resistance :Transmission length Cannection
<
SMItl
Order No .
SUBCON . . .
D
L
Type
PSM-KA-9SUB25/BB/2 METER PSM-KA-9SUB 9/BB/2 METER
DATA (B) < 3
64 kbit/s (NRZ) 1 ) 4% 7 ps RS-232 // RS-485 , supply // RS-485 1 kV DC, 1 min . aluminum, anodized, color: black 0°C up to +50°C CE in conformance with EMC guideline 89/336/EE C EN 50 081-1 EN 50 082-2
this 1)
NRZ = Non Return To Zero Code
Phno ..l., r+
X10 7
