ES-6515 Rev.23

DLS

Telemetering System

TELEMETERING UNIT

Functions & Features
• Interfacing remote I/O devices with a modem for a telemetering system
• Process I/O

MODEL: DLS–[1][2]–[3][4]

ORDERING INFORMATION

• Code number: DLS-[1][2]-[3][4]
Specify a code from below for each of [1] through [4].
(e.g. DLS-1S1A4B4-K/M4A)

[1] TRANSMISSION MEDIA

1: Twisted-pair cable
2: Fiber optics cable
7: Twisted-pair – fiber optics (repeater incorporated)

[2] I/O SECTION

00: None
A1: Di 32 points
A2: Di 64 points
C1: Do 32 points (relay)
C2: Do 32 points (open collector)
C3: Do 64 points (relay)
C4: Do 64 points (open collector)
E1: Di 16 + Do 16 points (relay)
E2 : Di 16 + Do 16 points (open collector)
G1x: Ai 32 points
M1x: Ao 32 points
P1x : Pi 16 + Ai 16 points
R1xx: Ai 16 + Ao 16 points
S1xx: Ai 8 + Ao 8 + Di 8 + Do 8 points
U1x : Po 16 + Ao 16 points
See data sheet for Standard Multi-Transmission Unit (model: DLA1) for specifications of I/O sections.

[3] POWER INPUT

AC Power
K: 85 – 132 V AC
(Operational voltage range 85 – 132 V, 47 – 66 Hz)
L: 170 – 264 V AC
(Operational voltage range 170 – 264 V, 47 – 66 Hz)
DC Power
S: 12 V DC
(Operational voltage range 12 V ±10 %, ripple 10 %p-p max.)
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
Note: Modem /A1x not selectable for use with DC power input.

[4] MODEM

/A1A: 50 bps use modem (model: MOD); Station A
/A1B: 50 bps use modem (model: MOD); Station B
/M3A: 1200 bps use modem (model: MOD3x); Station A
/M3B: 1200 bps use modem (model: MOD3x); Station B
/M4A: 300 bps use voice/data modem
(model: MOD7, MOD4 (discontinued)); Station A
/M4B: 300 bps use voice/data modem
(model: MOD7, MOD4 (discontinued)); Station B
/M5A: 1200 bps use modem
(model: MOD5, MOD8); Station A
/M5B: 1200 bps use modem
(model: MOD5, MOD8); Station B
/M6A: 2400 bps use modem
(model: MOD6); Station A
/M6B: 2400 bps use modem
(model: MOD6); Station B
Note: Consult factory for modem specifications.

RELATED PRODUCTS

• Standard multi-transmission unit (model: DLA1)
• Connector terminal block (model: CNT)
• RS cable (model: DCN1)
• Special cable with 40-pin connector (model: FCN)
• 50 bps modem (model: MOD)
• 1200 bps modem (model: MOD3x)
• Voice/data modem
(model: MOD7, MOD4 (discontinued))
• 1200 bps modem (model: MOD5, MOD8)
• 2400 bps modem (model: MOD6)

GENERAL SPECIFICATIONS

Construction: Surface mounting; terminal access on the front
Connection
Transmission line terminal: Euro type connector terminal; wire size 1.25 mm² max.
Power supply terminal: Euro type connector terminal; wire size 1.25 mm² max.
RUN contact output: Euro type connector terminal; wire size 1.25 mm² max.
I/O section:
•32-point I/O (or less): 40-pin connector terminal; M3 × 6 screws (torque 0.7 N·m)
•64-point I/O: FCN 40-pin connector (two);
OTAX N365P040AU
(FUJITSU FCN-365P040-AU)
Housing material: Flame-resistant resin (beige)
Isolation: I/O to transmission section to power
DIP switch: Setting RS-232-C specifications or modem settings (except "/A1")
Station No. setting: 2 rotary switches; 00 – FF (256)
■ Controller & Transmission Sections
Power indicator: Red LED turns ON in normal conditions; OFF when the voltage level becomes low.
RUN indicator: Red LED turns OFF in error.
■ I/O Section
Contact I/O indicator LED: Red lights turn on when the respective I/O channels are ON.
Analog I/O CPU RUN indicator LED: Red LED turns ON when the CPU function proves normal, OFF in error.
■ RUN Contact Output: Contact opens in error.
Rated load: 100 V AC or 30 V DC @ 1 A (resistive load)
Maximum switching voltage: 120 V AC or 30 V DC
Maximum switching power: 100 VA or 30 W
Minimum load: 5 V DC @ 10 mA
Error detection
•Communication: The receiver units detect loss of communication and wire break.
•CPU: Watch-dog timer
•Power voltage: Detects when the voltage supply to the CPU drops by 10 %.

MULTIPLEX COMMUNICATION

Communication: Half-duplex, synchronous
Transmission: Conform to RS-422, EIA
Transmission speed: 125 kbps
Protocol: SIN-NET (dedicated; data format conforms to SDLC)
Error check: CRC
■ Twisted-pair Cable
Cable: CPEV-0.9 dia.
Connection: Euro Type connector terminal
(Applicable wire size: ≤ 1.25 mm², stripped length 8 mm)
Transmission Distance: 1 kilometer max. with 16 units connected; 3 kilometers max. between 2 stations each of which consists of 3 units
Terminator: Incorporated (Remove the attached jumper pin when the unit is not located at the end of transmission line.)
■ Fiber Optics Cable
Link: JIS F07 connector (Consult factory for details)
Transmission distance: 1 kilometer max. with PCF
Transmission loss: 7 dB max.
■ Twisted-pair – Fiber Optics: Converting signals between two media and waveform shaping

MODEM / INTERFACE

Transmission: Conform to EIA RS-232-C
Communication: Asynchronous, half-duplex,
non-procedure
DIP switch: Setting RS-232-C specifications
Transmission speed: 50 – 9600 bps
Data bit: 7 or 8 bits
Stop bit: 1, 1.5 or 2 bits
Parity: even or odd
RS-232-C connector: 25-pin D-sub connector (female) (M2.6 × 0.45 screw connector)
RS-232-C cable: straight (provided by the user) our modems listed in Model & Suffix Code Selection section, for MOD, MOD4 and MOD5, include RS-232-C cables. For the MOD3x, MOD6, MOD7 and MOD8, a RS-232-C cable, model DCN1 must be purchased separately.
Configuration: each station is composed of a DLS and a modem unit. The paired DLS's are adjusted at the factory as Station A and Station B.

INSTALLATION

Power consumption
•AC: Approx. 17.5 VA
•DC: Approx. 17 W (1.1 A with 24 V)
Grounding: Not required in normal environments; 100 Ω or less grounding resistance in noisy environments
Operating temperature: -5 to + 50°C (23 to 122°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: Surface; Rack Mounting Frame (model: BX-1DL) available
Weight: 2 kg (4.4 lb)

PERFORMANCE

Permissible power failure duration
•AC: ≤ 20 ms
•DC: ≤ 1 ms
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(I/O to transmission to power)

DESCRIPTIONS

■ RUN Contact (LED) Behaviors
The LED operates when both the communication line conditions and DLS units conditions are true.
Comm. line conditions
Input units (00, A1, A2, G1 and P1): The LED turns ON with the network configured; OFF in an abnormality; the network is reconfigured after an abnormality.
  Output units (C1, C2, C3, C4, M1 and U1): The LED turns ON when data from the paired input unit is received normally, with the network configured; OFF when the data is lost; turns also OFF in an abnormality in the network.
  I/O-mixed units (E1, E2, R1 and S1): Functions of both input and output units are used.
DLS units conditions: The LED turns ON when the transmission is normal between the DLS units; OFF after three retries in a transmission abnormality.
[CAUTION]
When the network is reconfigured e.g. by noise interference, the RUN LED and output for all units on the network turn briefly OFF until they are turned ON after the reconfiguration is complete.
■ How to Caculate Transmission Speed
1. Data Volume and Transmission Time of I/O Unit
I/O type of DLS (or DLA1) units determines each unit's multi-transmission time. The DLS collects data from each station and transmits to the other station.
(Input Model Suffix: Data Volume)
A1, E1: 30 bytes
A2: 60 bytes
G1, P1: 212 bytes
R1: 116 bytes
S1: 68 bytes
C1, C2, C3, C4, M1, U1: 0 bytes
Transmission time for 1 unit is calculated utilizing each unit's data volume.
Transmission time = (data volume) × (number of data bits per 1 byte ÷ transmission speed [bps]) + waiting time per unit (0.5 sec.)
[example] Transmission time of type A1, S1 and C1 units
•A1 unit (1200 bps)
30 × 12 ÷ 1200 + 0.5 = 0.8 (sec.)
•S1 unit (1200 bps)
68 × 12 ÷ 1200 + 0.5 = 1.18 (sec.)
•C1 unit 0 sec.
Transmission time for those units with 0 data
volume equals 0.

2. Start / End of Transmission
The DLS transmits codes to the paired station at the start and end of transmission sequence respectively. The data volume differs according to modem type.
(Modem Type: MOD4/5; Others)
Start-of-transmission time: 7 bytes; 2 bytes
End-of transmission time: 6 bytes; 2 bytes
Start-of-Transmission time = (data volume) × (number of data bits per 1 byte ÷ transmission speed [bps]) + waiting time per unit (0.1 sec.)
Remark: Waiting time for MOD4 and MOD5 is 0.3 sec.
[example] Modem type /M5A (1200 bps)
2 × 12 ÷ 1200 + 0.1 = 0.12 (sec.)
End-of-Transmission time = (data volume) × (number of data bits per 1 byte ÷ transmission speed [bps]) + waiting time per unit (0.5 sec.)
[example] Modem type /M5A (1200 bps)
2 × 12 ÷ 1200 + 0.5 = 0.52 (sec.)

3. Total Transmission Time per Unit
The above (1) transmission time and (2) & (3) Start-/End-of transmission time must be added to calculate the total transmission time required by one DLS unit.
Total transmission time per unit = (start-of-transmission time) + (transmission time) + (end-of-transmission time)
[example] Station A: S1 and A1 units
Station B: S1 and C1 units
Modem type /M5A (1200 bps)
•Station A transmission time
0.12 + (1.18 + 0.8) + 0.52 = 2.62 (sec.)
•Station B transmission time
0.12 + (1.18 + 0) + 0.52 = 1.82 (sec.)

4. Overall Transmission Cycle
The overall transmission cycle is determined as the time required by one DLS unit starting transmission before the next transmission.
Overall transmission cycle = Station A total transmission time + Station B total transmission time
[example] Station A: S1 and A1 units
Station B: S1 and C1 units
Modem type /M5A (1200 bps)
2.62 + 1.82 = 4.44 (sec.)
The time required for the input signals to be output at the output unit varies according to the exact moment of input.
•Minimum (Station A input to Station B output)
= Station A total transmission time per unit
= 2.62 (sec.)
•Maximum (Station A input ot Station B output)
= Overall transmission cycle
     + Station A total tansmission time per unit
= 7.06 (sec.)
Therefore, the time required for a Station A input to be output at the Station B varies between 2.62 and 7.06 seconds as far as there is no transmission error.
■SYSTEM CONFIGURATION EXAMPLE