User`s manual
Industrial Networking Solutions
15-67
info@moxa.com
www.moxa.com
15
Embedded Computers for Communication >
EM-1220 Series
PIN RS-232 RS-422/485 -4W RS-485-2W
1 DCD TxD-(A) –
2 RxD TxD+(B) –
3 TxD RxD+(B) Data+(B)
4 DTR RxD-(A) Data-(A)
5 GND GND GND
6 DSR ––
7RTS ––
8 CTS ––
1 2 3 4 5
6 7 8 9
DB9 male
Pin No. Signals Pin No. Signals
1 VCC (3.3V) 2 VCC (3.3V)
3 VCC (3.3V) 4 VCC (3.3V)
5 GND 6 GND
7 GND 8 GND
9 TxD0 (RS-232) 10 RxD0(RS-232)
11 RTS0 12 CTS0
13 DTR0 14 DSR0
15 RxD1 (RS-232) 16 DCD0
17 CTS1 18 TxD1 (RS-232)
19 DSR1 20 RTS1
21 DCD1 22 DTR1
23
Data-(A)0/
RxD-(A)0
24
Data-(A)1/
RxD-(A)1
25
Data+(B)0/
RxD+(B)0
26
Data+(B)1/
RxD+(A)1
27 Serial LED_Tx0 28 Serial LED_Rx0
29 Serial LED_Tx1 30 Serial LED_Rx1
31 TxDA(-)0 32 TxDA(-)1
33 TxDB(+)0 34 TxDB(+)1
Pin No. Signals Pin No. Signals
1 Console_RxD 2 Console_TxD
3 Eth1_TxD_out+ 4 GND
5 Eth1_TxD_out- 6 Eth1_RxD_in+
7 Eth1_LED_100M 8 Eth1_RxD_in-
9 Eth0_TxD_out+ 10 Eth1_LED_10M
11 Eth0_TxD_out- 12 Eth0_RxD_in+
13 Eth0_LED_100M 14 Eth0_RxD_in-
15 GPIO0 16 Eth0_LED_10M
17 GPIO2 18 GPIO1
19 GPIO4 20 GPIO3
21 GPIO6 22 GPIO5
23 GPIO8 24 GPIO7
25 Buzzer 26 GPIO9
27 LED_Ready 28 SW Reset
29 SDA 30 SCL
31 GND 32 GND
33 GND 34 GND
Hardware Specifi cations
Pin Assignment
Jumper 1 (J1) Jumper 2 (J2)
J1 J2
Computer
CPU: MOXA ART ARM9 32-bit 192 MHz processor
OS (pre-installed): Embedded µClinux (kernel 2.6.19)
DRAM: 16 MB onboard (32 MB for ODM)
Flash: 8 MB onboard (16 MB for ODM)
Storage
Storage Expansion: SD signals for external Secure Digital (SD)
socket connection
Ethernet Interface
LAN: 2 auto-sensing 10/100 Mbps ports (RJ45)
Magnetic Isolation Protection: 1.5 KV built-in
Serial Interface
Serial Standards: 2 RS-232/422/485 ports, software-selectable
ESD Protection: 15 KV for all signals
Console Port: RS-232 (TxD, RxD, GND), 4-pin pin header output
Serial Communication Parameters
Data Bits: 5, 6, 7, 8
Stop Bits: 1, 1.5, 2
Parity: None, Even, Odd, Space, Mark
Flow Control: RTS/CTS, XON/XOFF, ADDC® (automatic data
direction control) for RS-485
Baudrate: 50 bps to 921.6 Kbps (supports non-standard baudrates;
see user’s manual for details)
Serial Signals
RS-232: TxD, RxD, DTR, DSR, RTS, CTS, DCD, GND
RS-422: TxD+, TxD-, RxD+, RxD-, GND
RS-485-4w: TxD+, TxD-, RxD+, RxD-, GND
RS-485-2w: Data+, Data-, GND
LEDs
System: Ready
LAN: 10M/Link x 2, 100M/Link x 2
Serial: TxD x 2, RxD x 2
Physical Characteristics
Weight:
EM-1220 Module: 40 g
EM-1220 Development Kit: 120 g
Dimensions:
EM-1220 Module: 80 x 50 mm (3.15 x 1.97 in)
EM-1220 Development Kit: 117 x 70 mm (4.61 x 2.76 in)
Module Interface: Two 2 x 17 pin-headers (2.5 x 2.5 mm pitch)
Environmental Limits
Operating Temperature:
Standard Models: -10 to 60°C (14 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Operating Humidity: 5 to 95% RH
Storage Temperature:
Standard Models: -20 to 80°C (-4 to 176°F)
Wide Temp. Models: -40 to 85°C (-40 to 185°F)
Power Requirements
Input Voltage: 3.3 VDC
Power Consumption: 2.1 W (625 mA @ 3.3 VDC)
Regulatory Approvals
EMC: CE (EN55022 Class A, EN61000-3-2 Class A, EN61000-3-3,
EN55024), FCC (Part 15 Subpart B, CISPR 22 Class A)
Reliability
Alert Tools: Built-in buzzer and RTC (real-time clock)
Automatic Reboot Trigger: Built-in WDT (watchdog timer)
Warranty
Warranty Period: 5 years
Details: See www.moxa.com/warranty
Note: The Hardware Specifi cations apply to the embedded computer unit itself,
but not to accessories. In particular, the wide temperature specifi cation does
not apply to accessories such as the power adaptor and cables.